CVE & CISA-KEV CatalogNVD
CVE-2026-66795
CRITICAL9.1
CVSS v3
Description
A flaw was found in the managedcluster-import-controller. The Certificate Signing Request (CSR) auto-approval logic improperly validates incoming CSRs, specifically by not inspecting the signer name or decoding the PEM-encoded x509 CSR. This vulnerability allows a privileged service account on a spoke cluster to submit a malicious CSR. Successful exploitation can lead to privilege escalation, enabling the attacker to obtain administrative credentials on the hub cluster.
How to fix
Remediation Available
registry.redhat.io/multiclusterRocky
Fixed in:engine/maestro-rhel9@sha256:9a1652d08ad608cad7d93f05be89a2878136ab887dcbc90e5457cf808550634f_arm64RHSA-2026:59593
Fixed in:engine/hive-rhel9@sha256:3e5b2513ebb3182f59169cc0da8f77f8487f6417e35e98fbe4bde9363085783a_s390xRHSA-2026:59593
Fixed in:engine/placement-rhel9@sha256:797f2acc37f9ff386d48851c1d39d53dddacf3c00eb5564744a820d83e40e167_s390xRHSA-2026:59593
Fixed in:engine/placement-rhel9@sha256:d12d850354296db56e79d3e9c3aab42aa843e461767763f4167ae5450d995e5d_s390xRHSA-2026:59559
Fixed in:engine/work-rhel9@sha256:991c6ef2abc9f91e4ed1ea627aa58d639badf4cb48ac46ab6a4c4b83c8dec483_arm64RHSA-2026:59556
Fixed in:engine/registration-rhel9@sha256:18c666d9e6ec7f4090f3627b8cfa512b8e51477f4ae6bf051a4e85356193ab07_s390xRHSA-2026:59559
Fixed in:engine/registration-rhel9@sha256:f5ad878275f947faed63ffed396d23d00164438e2387722115de4727e92ec81c_amd64RHSA-2026:59593
Fixed in:engine/hive-rhel9@sha256:07b73f1e3dc41f3cd3d9f73e7f91431de830476df98bc0cc72e083683e37ba36_arm64RHSA-2026:59593
registry.redhat.io/multiclusterRed Hat / RHEL
Fixed in:engine/work-rhel9@sha256:18ce6b38874794a3939dcc7873b52828793d7e3f0dfd7e62bb3e9d5ed2b5fb6d_s390xRHSA-2026:59579
Fixed in:engine/placement-rhel9@sha256:4c23f4168131210bdbdf65c75de7f7d16c476766010cee03c86e2ddcfa7968e8_ppc64leRHSA-2026:59558
Fixed in:engine/hive-rhel9@sha256:433047680d5064203645f328e25e5c792d7fa097797a9babedffd98570ed113d_amd64RHSA-2026:59593
Fixed in:engine/discovery-rhel9@sha256:08905b9e3ac7c445fc7dd4e9b6407acafd60e394c66432d019325e61e49180da_arm64RHSA-2026:59593
Fixed in:engine/placement-rhel9@sha256:f8976870ed5c76e7e996958f4e2423b173889681c5025d6bb0585434bfaf9566_ppc64leRHSA-2026:59556
Fixed in:engine/work-rhel9@sha256:5005b9be66591a6cfa64106e0c664a580832dc77eab2d19b918e3d53a4898310_amd64RHSA-2026:59559
Fixed in:engine/hive-rhel9@sha256:ccd7fca68979a061243fec3b4a0d477ebd6b01e31d6b50b9ca775f8a33516978_s390xRHSA-2026:59557
Fixed in:engine/registration-rhel9@sha256:c139df708e124b69c4cec06b0443dd505f8aff40cb6b189c210fdbf5b1496ced_amd64RHSA-2026:59579
registry.redhat.io/multicluster-engine/addonRed Hat / RHEL
Fixed in:manager-rhel9@sha256:d1d588dada5b4df6834112599ded1d58803440dbb469bcef41f45edc588eeab5_s390xRHSA-2026:59558
Fixed in:manager-rhel9@sha256:5acf929f44e14e1a1d229e0a4d0e0d68c592654435d0a7ea234c23d88e7da686_s390xRHSA-2026:59556
Fixed in:manager-rhel9@sha256:82c5f7aa025b65ea5a717ac6b4fbdb14cdaa70d1836f3f1e18c0bba7892d06c5_arm64RHSA-2026:59579
Fixed in:manager-rhel9@sha256:610df72fa91b7ff983c5698c08462a2c77ec60d2940e8c0048054d14fd0a3e31_s390xRHSA-2026:59557
Fixed in:manager-rhel9@sha256:0451628c58cb6738977a1a5499f204b07e8ab02b41e949b27b263fea3ea61f88_amd64RHSA-2026:59556
Fixed in:manager-rhel9@sha256:1a4b539f906040524f20d4afe9ebed65a0b24f901ea281ae869d6a8d99409698_ppc64leRHSA-2026:59559
Fixed in:manager-rhel9@sha256:28d20ad256324b95702089797fed9df150ffc8c605438e352d1b0a8823ff8ac4_arm64RHSA-2026:59593
Fixed in:manager-rhel9@sha256:43ea2804e5684613a657483b47e5484914fd9d6d57b2369840ce26ce770700ed_s390xRHSA-2026:59593
registry.redhat.io/multicluster-engine/addonRocky
Fixed in:manager-rhel9@sha256:3e9e3ef83f3da8d29471e8cc5cc0315f7b02dd44cfaafbd0b27f049d2efcc4a5_ppc64leRHSA-2026:59556
Fixed in:manager-rhel9@sha256:f3d371e80b911c80628f77af2831b982df5ecb2c31a01b0c4302bd7e1f5bcf55_amd64RHSA-2026:59593
Fixed in:manager-rhel9@sha256:ba6c4a20a6ee685c319df030bd2774e9ff9747c0bea02df16c169f85b20e4ca0_arm64RHSA-2026:59556
Fixed in:manager-rhel9@sha256:cc7013d30b2b83c31af89ce47b4c4efe09ec261d6d7ff12ee771edd76178eb40_arm64RHSA-2026:59559
Fixed in:manager-rhel9@sha256:39107a76cb734e1ac067b0e92edfa3b3ee815eceb88679d4694ac8ddbc132996_amd64RHSA-2026:59558
Fixed in:manager-rhel9@sha256:89c0187bbae1316dc2b339188399d35056da419ca5681c3c6b6c9ada8426ff5d_amd64RHSA-2026:59579
Fixed in:manager-rhel9@sha256:478425331df9f329a5ecdeab3c308720a5332b442524863509c56e9114ec04cc_s390xRHSA-2026:59579
Fixed in:manager-rhel9@sha256:610df72fa91b7ff983c5698c08462a2c77ec60d2940e8c0048054d14fd0a3e31_s390xRHSA-2026:59557
registry.redhat.io/multicluster-engine/azure-serviceRocky
Fixed in:operator-rhel9@sha256:cb6aa963152846f608b813af1148f27f65a3db4ee1e0a77f980a1fdcf02d8f4a_s390xRHSA-2026:59593
Fixed in:operator-rhel9@sha256:404dcf5023d8ff7a271516665c7e45cfa1402d61c1fabbfde2e109a644b228df_ppc64leRHSA-2026:59556
Fixed in:operator-rhel9@sha256:43b37c9163cd7336ef811263d8326c56c4df8f534106c8a4e7fd2ba99d7d3cd6_arm64RHSA-2026:59556
Fixed in:operator-rhel9@sha256:a9e5ed5f8168f16e376542c66e9a32427585dd308c1bed430a23f11429ae33ab_s390xRHSA-2026:59556
Fixed in:operator-rhel9@sha256:a223e9327b26151010bfcda521562399a769c2ec62bd047a5a52c5140fcdd3ea_amd64RHSA-2026:59593
Fixed in:operator-rhel9@sha256:a1ec6e7fb539a3887102bfd1cbbbb0a201682659daa764d743570dfb68a15bf4_ppc64leRHSA-2026:59593
Fixed in:operator-rhel9@sha256:bd6c6ada53b95837700bd37ac13e241e37cb31ee036c875abe8b19dc8ff5a202_arm64RHSA-2026:59593
Fixed in:operator-rhel9@sha256:8ae3b76219dc0aa9ecaf8ae7aa554db2eef47bfcca8a30f249fa58c848e07fb7_amd64RHSA-2026:59556
registry.redhat.io/multicluster-engine/azure-serviceRed Hat / RHEL
Fixed in:operator-rhel9@sha256:cb6aa963152846f608b813af1148f27f65a3db4ee1e0a77f980a1fdcf02d8f4a_s390xRHSA-2026:59593
Fixed in:operator-rhel9@sha256:a9e5ed5f8168f16e376542c66e9a32427585dd308c1bed430a23f11429ae33ab_s390xRHSA-2026:59556
Fixed in:operator-rhel9@sha256:8ae3b76219dc0aa9ecaf8ae7aa554db2eef47bfcca8a30f249fa58c848e07fb7_amd64RHSA-2026:59556
Fixed in:operator-rhel9@sha256:bd6c6ada53b95837700bd37ac13e241e37cb31ee036c875abe8b19dc8ff5a202_arm64RHSA-2026:59593
Fixed in:operator-rhel9@sha256:a223e9327b26151010bfcda521562399a769c2ec62bd047a5a52c5140fcdd3ea_amd64RHSA-2026:59593
Fixed in:operator-rhel9@sha256:404dcf5023d8ff7a271516665c7e45cfa1402d61c1fabbfde2e109a644b228df_ppc64leRHSA-2026:59556
Fixed in:operator-rhel9@sha256:a1ec6e7fb539a3887102bfd1cbbbb0a201682659daa764d743570dfb68a15bf4_ppc64leRHSA-2026:59593
Fixed in:operator-rhel9@sha256:43b37c9163cd7336ef811263d8326c56c4df8f534106c8a4e7fd2ba99d7d3cd6_arm64RHSA-2026:59556
registry.redhat.io/multicluster-engine/backplaneRed Hat / RHEL
Fixed in:rhel9-operator@sha256:67fe0a996cbb7af417edf2b4b7b7cac1c1d638e0cfe8d0e684c8d4314814de49_ppc64leRHSA-2026:59557
Fixed in:rhel9-operator@sha256:48f8ef0bfc8853ed22b45dffd9f880ac426cd01ecb3127e937776e91e1d65a8f_s390xRHSA-2026:59593
Fixed in:rhel9-operator@sha256:98c3890f6aa831d8a8414b7d6eed8341cb622f411de8b40c246a44fc9418d408_amd64RHSA-2026:59556
Fixed in:rhel9-operator@sha256:0225d9860665b2f594ee080a52c359cd0e7f80259512f8335efb1b5aa2a4fa13_arm64RHSA-2026:59556
Fixed in:rhel9-operator@sha256:329177de16ae423bcf4322258097e3055ffe3e77d2e067e7ecf364e50c8120c0_s390xRHSA-2026:59558
Fixed in:rhel9-operator@sha256:7645582f77914160ce55fb649e88e69bbdac7401be2f23ff07b876d7b9f2af78_ppc64leRHSA-2026:59556
Fixed in:rhel9-operator@sha256:1498d1ca785392bec64325d021a4e1c9761423ab81f9e80d44a8948cce3a393d_arm64RHSA-2026:59593
Fixed in:rhel9-operator@sha256:631d71ab051143fbd095b70014c0a4c422d7190a7f5ff9286efb04e125cbdce0_arm64RHSA-2026:59558
registry.redhat.io/multicluster-engine/backplaneRocky
Fixed in:rhel9-operator@sha256:9551ff2958489c920a4da96696c1a09f282afd882e19dd95b8b1ac1260726dc7_ppc64leRHSA-2026:59558
Fixed in:rhel9-operator@sha256:1c7f83bf0ff1d3231bc3d2c8559708671e58229e4ddcbd1db8607559d0564fed_amd64RHSA-2026:59557
Fixed in:rhel9-operator@sha256:a105d84c9cf07ebb22f551364b014ffe53e7e8d3d12960a1626f626ba0ef1ab2_s390xRHSA-2026:59579
Fixed in:rhel9-operator@sha256:67fe0a996cbb7af417edf2b4b7b7cac1c1d638e0cfe8d0e684c8d4314814de49_ppc64leRHSA-2026:59557
Fixed in:rhel9-operator@sha256:0225d9860665b2f594ee080a52c359cd0e7f80259512f8335efb1b5aa2a4fa13_arm64RHSA-2026:59556
Fixed in:rhel9-operator@sha256:98c3890f6aa831d8a8414b7d6eed8341cb622f411de8b40c246a44fc9418d408_amd64RHSA-2026:59556
Fixed in:rhel9-operator@sha256:631d71ab051143fbd095b70014c0a4c422d7190a7f5ff9286efb04e125cbdce0_arm64RHSA-2026:59558
Fixed in:rhel9-operator@sha256:2ec34db505644df5b118f80548f20aa9b5aab5774f5caea0aa2016119f1b8a2a_amd64RHSA-2026:59558
registry.redhat.io/multicluster-engine/capoaRed Hat / RHEL
Fixed in:bootstrap-rhel9@sha256:a7358415fd9d8529f817e121ea275b9bcee8eaf4549989e38be7d2a199fdeb6f_s390xRHSA-2026:59556
Fixed in:bootstrap-rhel9@sha256:ced32449a6b1f022ee0f28c74083d693870d932930c071a600d09ca50afb6edd_ppc64leRHSA-2026:59559
Fixed in:bootstrap-rhel9@sha256:4ef3304a33a387668f0b5fa1b6998e64062cd61e19aa3b49b444400d4ba5b229_s390xRHSA-2026:59557
Fixed in:bootstrap-rhel9@sha256:7c777cb8bb9817687a5358f3cdd1586004f611c26662d3f49ef13915f837bdcd_arm64RHSA-2026:59559
Fixed in:bootstrap-rhel9@sha256:6d1d6d02896f941ad20822baf5b5a9200a1989cb018cab1258945b637a01797d_s390xRHSA-2026:59593
Fixed in:bootstrap-rhel9@sha256:b8606468aabd58cc015ee48aadbe7d69bf2ceedf25466c201303fdeb01aeedb0_arm64RHSA-2026:59557
Fixed in:bootstrap-rhel9@sha256:fd3a8c00893e74eb82f4a4a9c026525d0fe88768a2bb6a70922448c4460a1328_arm64RHSA-2026:59556
Fixed in:bootstrap-rhel9@sha256:5c16fb11a2f74c77d579a5addb084965e0d60f090a398479c1e7924948a85023_ppc64leRHSA-2026:59593
registry.redhat.io/multicluster-engine/capoaRocky
Fixed in:bootstrap-rhel9@sha256:8cd9a08751dd743599290c540cbb69d91a8e179668bba8de8c4ee520ad3dae46_amd64RHSA-2026:59593
Fixed in:bootstrap-rhel9@sha256:b8606468aabd58cc015ee48aadbe7d69bf2ceedf25466c201303fdeb01aeedb0_arm64RHSA-2026:59557
Fixed in:bootstrap-rhel9@sha256:a7358415fd9d8529f817e121ea275b9bcee8eaf4549989e38be7d2a199fdeb6f_s390xRHSA-2026:59556
Fixed in:bootstrap-rhel9@sha256:fd3a8c00893e74eb82f4a4a9c026525d0fe88768a2bb6a70922448c4460a1328_arm64RHSA-2026:59556
Fixed in:bootstrap-rhel9@sha256:e45ef752eeafd85f33f0b87e955055b701522a99c01b5b1662997015cda0e236_amd64RHSA-2026:59557
Fixed in:bootstrap-rhel9@sha256:7c777cb8bb9817687a5358f3cdd1586004f611c26662d3f49ef13915f837bdcd_arm64RHSA-2026:59559
Fixed in:bootstrap-rhel9@sha256:36ec9ddd267a79d04ea91d3867d57d7f11ddf7ab09e06ec36477bf8c921dfcc1_amd64RHSA-2026:59556
Fixed in:bootstrap-rhel9@sha256:4ef3304a33a387668f0b5fa1b6998e64062cd61e19aa3b49b444400d4ba5b229_s390xRHSA-2026:59557
registry.redhat.io/multicluster-engine/capoa-controlRed Hat / RHEL
Fixed in:plane-rhel9@sha256:fa831832da15a85b49d52812220f3e6de82793461016cc659577113c0a5a0a4c_ppc64leRHSA-2026:59557
Fixed in:plane-rhel9@sha256:f6cb1be4562925663c40cecbef1874e0cc3b9420e72e84b7829049f6198c1926_arm64RHSA-2026:59593
Fixed in:plane-rhel9@sha256:90153bc36951f2be3330a0e1c73525dac72ba9dd7a34727d0e2b3214043d7573_amd64RHSA-2026:59556
Fixed in:plane-rhel9@sha256:073ebe38b89107a2883e7557ad359244f83c663141181f113851bd737b4117af_ppc64leRHSA-2026:59556
Fixed in:plane-rhel9@sha256:32293c26199bf6d9f20523e8d210b2dd77f27f825f073b17df3e5e3525997f76_arm64RHSA-2026:59556
Fixed in:plane-rhel9@sha256:104cfeb03d0b29b7e76516aa3ac8072366efeef5c136b68f7c3e8e0ad5ce1b96_amd64RHSA-2026:59557
Fixed in:plane-rhel9@sha256:9d6d6e1842af29b5fc154ce65f9b77cd640754d29fe3867076855b0bfea6dccc_ppc64leRHSA-2026:59593
Fixed in:plane-rhel9@sha256:053a61ec8e0729be31362e335d720d6bc81591eb290fd59e3df13faf4f5f2fae_arm64RHSA-2026:59559
registry.redhat.io/multicluster-engine/capoa-controlRocky
Fixed in:plane-rhel9@sha256:9d6d6e1842af29b5fc154ce65f9b77cd640754d29fe3867076855b0bfea6dccc_ppc64leRHSA-2026:59593
Fixed in:plane-rhel9@sha256:60128db2df92e5703db2d51c74a8be50eb4a9d0db4ac8dbd174ff9143077d175_ppc64leRHSA-2026:59559
Fixed in:plane-rhel9@sha256:0cb8604d4e30774a567456b816e41fab2dd9356fe8cc6f607e80f8d885e507be_s390xRHSA-2026:59556
Fixed in:plane-rhel9@sha256:4e6fd64d116ff5361c7a42a1e73a446c46ec4f52b5afa9e54dbf7086b6f7e5ae_amd64RHSA-2026:59593
Fixed in:plane-rhel9@sha256:053a61ec8e0729be31362e335d720d6bc81591eb290fd59e3df13faf4f5f2fae_arm64RHSA-2026:59559
Fixed in:plane-rhel9@sha256:073ebe38b89107a2883e7557ad359244f83c663141181f113851bd737b4117af_ppc64leRHSA-2026:59556
Fixed in:plane-rhel9@sha256:5fa09497a00c910a08d32caac06e89affcabad9764be636fc2c580df77d4a795_s390xRHSA-2026:59559
Fixed in:plane-rhel9@sha256:fa831832da15a85b49d52812220f3e6de82793461016cc659577113c0a5a0a4c_ppc64leRHSA-2026:59557
registry.redhat.io/multicluster-engine/cloudeventsRed Hat / RHEL
Fixed in:conductor-rhel9@sha256:d981a7fcaddb7da9d8799876622dcba116764a1fed410c8e8384306397590542_amd64RHSA-2026:59593
Fixed in:conductor-rhel9@sha256:2429ab7e2f81b111d4f759bca52bace0307ce0dcf2e52d6f4b4e25ad9ec602ba_ppc64leRHSA-2026:59593
Fixed in:conductor-rhel9@sha256:fe3a586cbd202c2b6987668fc86aef645da77b367157613278d4bba173a19baf_arm64RHSA-2026:59593
Fixed in:conductor-rhel9@sha256:2ad5f3439fbb259d2a7fb53088f545da9a465ae432a31fa41c831ee8e658a193_s390xRHSA-2026:59593
registry.redhat.io/multicluster-engine/cloudeventsRocky
Fixed in:conductor-rhel9@sha256:2ad5f3439fbb259d2a7fb53088f545da9a465ae432a31fa41c831ee8e658a193_s390xRHSA-2026:59593
Fixed in:conductor-rhel9@sha256:d981a7fcaddb7da9d8799876622dcba116764a1fed410c8e8384306397590542_amd64RHSA-2026:59593
Fixed in:conductor-rhel9@sha256:fe3a586cbd202c2b6987668fc86aef645da77b367157613278d4bba173a19baf_arm64RHSA-2026:59593
Fixed in:conductor-rhel9@sha256:2429ab7e2f81b111d4f759bca52bace0307ce0dcf2e52d6f4b4e25ad9ec602ba_ppc64leRHSA-2026:59593
registry.redhat.io/multicluster-engine/clusterRed Hat / RHEL
Fixed in:proxy-rhel9@sha256:4a49e077a077ec1521ed316ac4c0aaa495493def5bdddc6e95b79e08f6057f2a_arm64RHSA-2026:59593
Fixed in:proxy-rhel9@sha256:57466b1054122ae9d616104cd3c41f8d3c1a3c510e7cc2578923ee3daaa8060c_amd64RHSA-2026:59557
Fixed in:proxy-rhel9@sha256:598bbc8b366f87d23ff4e62a2144adb90b6ef302b4e7efe7651b3a2a7bfa5858_s390xRHSA-2026:59557
Fixed in:proxy-rhel9@sha256:de654aef03a61d18db6b5806d0397a2ea913f001341c0f71d0048bbded160990_arm64RHSA-2026:59557
Fixed in:proxy-rhel9@sha256:8187c1e36c3dc6c22de421b34eebc261e497de99f1123b376fd626eeea6e9d98_arm64RHSA-2026:59556
Fixed in:proxy-rhel9@sha256:a0c878455158795be8b77010fb6eaa6b4f61886b36a35681426381e5a8871d91_s390xRHSA-2026:59559
Fixed in:proxy-rhel9@sha256:835db0477c49df38687ecde4f3c0268e0ed80fa425027b59598cd7a67791109e_arm64RHSA-2026:59558
Fixed in:permission-rhel9@sha256:b3b4ca62824cf84c653cb9c4fef4d33a8adb15ba8d9b212ccad3a3b106a4329c_amd64RHSA-2026:59593
registry.redhat.io/multicluster-engine/clusterRocky
Fixed in:proxy-rhel9@sha256:1df9a040f6eaacaca9dfdabed3de15fc7a10bcb0d7cdb12fb64db008a3a87d55_ppc64leRHSA-2026:59557
Fixed in:proxy-rhel9@sha256:835db0477c49df38687ecde4f3c0268e0ed80fa425027b59598cd7a67791109e_arm64RHSA-2026:59558
Fixed in:proxy-rhel9@sha256:85bf722baeb7626570569f3681353289748fd3caf773f0adea41434f799fa1c4_s390xRHSA-2026:59593
Fixed in:proxy-rhel9@sha256:cea0af047c86c1ffded2edb0e39d4c491c91d570eb644148aaccd8c4ed8520b2_s390xRHSA-2026:59558
Fixed in:proxy-rhel9@sha256:82a8076d032b2f199ecdeaff6caeca3779efe606f9acb3a18823f2b3039c6dc4_s390xRHSA-2026:59579
Fixed in:proxy-rhel9@sha256:953fff3457dd3052990aef7bd6cc5ceed53d729e0aa770adf237ae4d16f94c6c_amd64RHSA-2026:59593
Fixed in:proxy-rhel9@sha256:b4e30ade880d0618ae3e021eff96b1cd1ec9b2bf13bd1a20f54f9c00ecf5d29a_amd64RHSA-2026:59556
Fixed in:permission-rhel9@sha256:50485c873271a85c29f4dd6a495625041f6bf0f35280f7fab0b2c9a02b48bbbf_arm64RHSA-2026:59593
registry.redhat.io/multicluster-engine/cluster-api-providerRocky
Fixed in:kubevirt-rhel9@sha256:6c2df804fba80d6d6c7ac5b4e2199f4da9119eb1956695194bf8103787d26a19_amd64RHSA-2026:59579
Fixed in:aws-rhel9@sha256:59c06be711e3f5926f46a1e9e29c9f6ed14594a1385d4d9b37d803e19acc3cb6_ppc64leRHSA-2026:59556
Fixed in:agent-rhel9@sha256:71cec7e3da1978e7431c50ab9e2095b57915431f4f66267cc7ac3160ac788d74_amd64RHSA-2026:59556
Fixed in:kubevirt-rhel9@sha256:3b69bad711b3358fa22546c193d0b7d15c96c1b0c445b36da1d426695516634d_ppc64leRHSA-2026:59557
Fixed in:kubevirt-rhel9@sha256:bcbb2a307b767a1ab92742703f0c3d2b435cc414f1394047fae1de491cf70edf_arm64RHSA-2026:59593
Fixed in:azure-rhel9@sha256:70d9474fb885cc1fad6b49dfe7a63c3ef8d9f0b5285232ea54c372931a3d3ac2_amd64RHSA-2026:59556
Fixed in:kubevirt-rhel9@sha256:942cb26bbdd64fedbc3ea93b0948be6c07d0452d8c7b7bdf4b557a58ccd3329a_ppc64leRHSA-2026:59559
Fixed in:azure-rhel9@sha256:70732fd8959a930326417b516e4befd860b50eee76542ac0fa1b3c09f09930d4_arm64RHSA-2026:59556
registry.redhat.io/multicluster-engine/cluster-api-providerRed Hat / RHEL
Fixed in:kubevirt-rhel9@sha256:3b69bad711b3358fa22546c193d0b7d15c96c1b0c445b36da1d426695516634d_ppc64leRHSA-2026:59557
Fixed in:kubevirt-rhel9@sha256:0a45e85f38275a5cd7ee2b59239b2a36cc158aba62597d66675bc56714929445_amd64RHSA-2026:59556
Fixed in:agent-rhel9@sha256:c86653f45ed8c480589f2d3cde84e1de45e23dbdeb7dcc398d5f0121ebc9215f_arm64RHSA-2026:59557
Fixed in:kubevirt-rhel9@sha256:942cb26bbdd64fedbc3ea93b0948be6c07d0452d8c7b7bdf4b557a58ccd3329a_ppc64leRHSA-2026:59559
Fixed in:kubevirt-rhel9@sha256:47ebcd5f56ea619facf43b3bc28affd8e6455085ca3bc03f8003f47cd69aa7cf_s390xRHSA-2026:59559
Fixed in:aws-rhel9@sha256:a8e31dc77bb1eeeaf967ea5bf32fe4d01051424bdd876753c22995673517fbfc_arm64RHSA-2026:59593
Fixed in:agent-rhel9@sha256:dbe55cb7c87224ae10d5b157ef5e66a4ffe4788bfb134a3db47d2c1bceab4eec_s390xRHSA-2026:59557
Fixed in:agent-rhel9@sha256:97e68d7e9cfecba5222cced3f26cbaa80e2990ff393a8bba3f1847418b558bf3_arm64RHSA-2026:59593
registry.redhat.io/multicluster-engine/cluster-curatorRed Hat / RHEL
Fixed in:controller-rhel9@sha256:8430a5c05f5bd902fe241a06b9b354e2c0a6d1f14176c29d6b0e096173bcb2be_s390xRHSA-2026:59559
Fixed in:controller-rhel9@sha256:515e1b8d4d85bb49f87cdd857ab193707cd27c50492661d3fcfe7d39618807e9_amd64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:f4927579a55325aff443a687b205a5bc501cd76c4456eb5cb040ed7069b896e8_s390xRHSA-2026:59557
Fixed in:controller-rhel9@sha256:a724ac704e271bafbb43a2b4a4ac3d394f118e4b00fd5137fbd61b4333b1c887_amd64RHSA-2026:59556
Fixed in:controller-rhel9@sha256:6d312615def25d135953ff42f49acff39ebe4876e1e1ceb3854416530a0c1523_s390xRHSA-2026:59558
Fixed in:controller-rhel9@sha256:01a94e2860bf5871f9b3fea049a291b487ac319b6521241a52cc08d0b23162da_ppc64leRHSA-2026:59558
Fixed in:controller-rhel9@sha256:217d5ddd1059827d1cd64e2a0b41a0434aea262176b5aad3855af97dd8e05c94_amd64RHSA-2026:59593
Fixed in:controller-rhel9@sha256:97a4040d296bceb72425636faf1542845d30cdbe23b9505cf7fab4cc0f64ca70_arm64RHSA-2026:59558
registry.redhat.io/multicluster-engine/cluster-curatorRocky
Fixed in:controller-rhel9@sha256:eb2d1d70ec1ad7ed41a0109f648c8e08d06fc72be2eabcd56b80a93d3c931c65_s390xRHSA-2026:59593
Fixed in:controller-rhel9@sha256:515e1b8d4d85bb49f87cdd857ab193707cd27c50492661d3fcfe7d39618807e9_amd64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:a08966e2deb53d78c9f4286446b6cb2c0c2e8a6c179ed182b9872cd6242de563_arm64RHSA-2026:59593
Fixed in:controller-rhel9@sha256:ce6f63545309f77de13631a75d9fa3e3060b053cb38eac4c5c673bfe2a41c772_amd64RHSA-2026:59557
Fixed in:controller-rhel9@sha256:8430a5c05f5bd902fe241a06b9b354e2c0a6d1f14176c29d6b0e096173bcb2be_s390xRHSA-2026:59559
Fixed in:controller-rhel9@sha256:95c9022b4f4afeef1fb7e45e52ef8c656e6aad20a1a7152ebeb7513d7fd90f90_s390xRHSA-2026:59579
Fixed in:controller-rhel9@sha256:db8de2f7d746129b52b64532b558639f4dc45ad606fc8b799c2660066e7d2501_arm64RHSA-2026:59556
Fixed in:controller-rhel9@sha256:b2d8de5fe912b7310f3101c2643ef11dbcbbf1ce9c615bd08ed6b51d33e1524c_ppc64leRHSA-2026:59557
registry.redhat.io/multicluster-engine/cluster-image-setRocky
Fixed in:controller-rhel9@sha256:95b3365d0dbf62b3219528b9416ff5e3772a4531ee5ff608f5203fffcaf338c2_s390xRHSA-2026:59556
Fixed in:controller-rhel9@sha256:5f296c7fe1dbe297110de3cf18b0acd795618ddc56c1aa28f6cbc206283cd97c_s390xRHSA-2026:59559
Fixed in:controller-rhel9@sha256:e5ffecfc7ded3de6e1d75de519cf97d4cf15ee28381898c3316eb2cc7fc05f5f_amd64RHSA-2026:59557
Fixed in:controller-rhel9@sha256:2db6ee2a8ffb28ee10583f3609e1506a76f9b4c540b17708c1961c2609cef2e9_ppc64leRHSA-2026:59558
Fixed in:controller-rhel9@sha256:6e0a027facc90fb9bf1f8784bbcd7305954f6064ef5523a9c73499e8409b9005_ppc64leRHSA-2026:59559
Fixed in:controller-rhel9@sha256:9bd16e4e778cc5040b4aac0905b48325eee1993c562bfdfa0d007e29fb7ed59b_arm64RHSA-2026:59556
Fixed in:controller-rhel9@sha256:26a3c6e4c02c695a19357b12d62cf349ad9237291b2b779ffef0cff1af75a7ca_s390xRHSA-2026:59579
Fixed in:controller-rhel9@sha256:4f3bef1750177e00106442a17752a974e3a811941a6ea7657bd092a9dbf87706_arm64RHSA-2026:59557
registry.redhat.io/multicluster-engine/cluster-image-setRed Hat / RHEL
Fixed in:controller-rhel9@sha256:2e1232109d9a383e4f1d976b4d508a5a53ca92794891eac7d75472535bbc99ff_ppc64leRHSA-2026:59556
Fixed in:controller-rhel9@sha256:26a3c6e4c02c695a19357b12d62cf349ad9237291b2b779ffef0cff1af75a7ca_s390xRHSA-2026:59579
Fixed in:controller-rhel9@sha256:2db6ee2a8ffb28ee10583f3609e1506a76f9b4c540b17708c1961c2609cef2e9_ppc64leRHSA-2026:59558
Fixed in:controller-rhel9@sha256:a5f96e3ba60f2a639c5c94282445b85ea77a0b5c509011170ce2e07afbc0d071_arm64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:22b1c051472b80f6d31e528852f46a2655cd98ab5034c17e7410fe7ff98038e7_ppc64leRHSA-2026:59557
Fixed in:controller-rhel9@sha256:fab072ca35afe8e2e0bf2b67fe60ae6a507dbcb93d4435b799d4034ddbd61543_amd64RHSA-2026:59559
Fixed in:controller-rhel9@sha256:95b3365d0dbf62b3219528b9416ff5e3772a4531ee5ff608f5203fffcaf338c2_s390xRHSA-2026:59556
Fixed in:controller-rhel9@sha256:c160d6059f3ad4f8a9cfb9db7843e963add06e7bdcc843417812557fc67434b7_s390xRHSA-2026:59558
registry.redhat.io/multicluster-engine/cluster-proxyRocky
Fixed in:addon-rhel9@sha256:d5dcc70669da9641e5e5e560d5f30baa70f29b2d9210cf92ce53930aa085698b_amd64RHSA-2026:59579
Fixed in:addon-rhel9@sha256:79f2432eded7ebdb078e152b5ae41329a55ebdbf7772076ff72a51010a2515be_amd64RHSA-2026:59558
Fixed in:addon-rhel9@sha256:1fe58c3119774229af7309fd874fd19c30b996dbfdc27d12e5c7fd638c2f8f49_arm64RHSA-2026:59559
Fixed in:addon-rhel9@sha256:f920481f708996edbc4ddc82bda2ea6c184a6adca21bd3d258ce0a5034318b56_s390xRHSA-2026:59557
Fixed in:addon-rhel9@sha256:ba94b75905cb1503313fb29ecf8b6fd74cd3fc4ea1e46963f737b1f02c7157e9_amd64RHSA-2026:59559
Fixed in:addon-rhel9@sha256:7dd9a383c4bbe3d1cf966a7dcb930148e90f4ba084a759adcf786204737035c5_arm64RHSA-2026:59558
Fixed in:addon-rhel9@sha256:7433942df0704764ffc381fd5dc2cea8a3c0571ea10027d7b88fcdf4340440aa_ppc64leRHSA-2026:59559
Fixed in:addon-rhel9@sha256:d7a5a53e94a0c5f871c01081b472d2973b7740a05b15dae7cafaeef793790a7a_amd64RHSA-2026:59557
registry.redhat.io/multicluster-engine/cluster-proxyRed Hat / RHEL
Fixed in:addon-rhel9@sha256:6a07e49a882b5c7242896fd8ba83d82ece6a4ae6b8b2c0116398410552c87a5b_ppc64leRHSA-2026:59579
Fixed in:addon-rhel9@sha256:f920481f708996edbc4ddc82bda2ea6c184a6adca21bd3d258ce0a5034318b56_s390xRHSA-2026:59557
Fixed in:addon-rhel9@sha256:08685e0e25a3c498f110eceb271219a46fd629427f4fa7441523c7720d1883cf_s390xRHSA-2026:59559
Fixed in:addon-rhel9@sha256:059ffd9e76ed4a946e85b3c7ea3e51de4c4510def6fefd118a7ef28cc2a29981_arm64RHSA-2026:59579
Fixed in:addon-rhel9@sha256:e82c36f361b8eb03b4c991823fa975f81bc29b41a044e0441998e3922bb84623_s390xRHSA-2026:59579
Fixed in:addon-rhel9@sha256:1fe58c3119774229af7309fd874fd19c30b996dbfdc27d12e5c7fd638c2f8f49_arm64RHSA-2026:59559
Fixed in:addon-rhel9@sha256:4f7f8515509882b36a95c109fb5372de195bf28924d5bce0ddfe025f71d597b3_ppc64leRHSA-2026:59557
Fixed in:addon-rhel9@sha256:d5dcc70669da9641e5e5e560d5f30baa70f29b2d9210cf92ce53930aa085698b_amd64RHSA-2026:59579
registry.redhat.io/multicluster-engine/clusterclaimsRocky
Fixed in:controller-rhel9@sha256:c988e9854b206ec43fdce4fa6c3d3787cb438cecf936b3c2c7f78034227da6a2_s390xRHSA-2026:59557
Fixed in:controller-rhel9@sha256:7a9ba3d78c6376affe4225f7cbf3600982c965b953984651cca247a327af6c21_ppc64leRHSA-2026:59559
Fixed in:controller-rhel9@sha256:9e46982f2db62f99b2410fe6639230cf9133617ff79a01266ae2ec2169dddc31_arm64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:daf8858158bbc24d0078ce4d7a217b7ab014df8e54a9c906f7c2b0e78e521cf4_amd64RHSA-2026:59579
Fixed in:controller-rhel9@sha256:26a2ba7c401b24135d8d822d5e228f1b9402a8be2d8037daf2c3dea858e9d9e7_s390xRHSA-2026:59558
Fixed in:controller-rhel9@sha256:58c3d53c9d99f48373f06f3c84b9d0329016638b325fe814bd648e31f26d4286_ppc64leRHSA-2026:59593
Fixed in:controller-rhel9@sha256:76ccd7f63714b940790058c4415bea488c6cca1d9853bbcd2ec1553a0822115c_arm64RHSA-2026:59556
Fixed in:controller-rhel9@sha256:630b3d18f5a07192b130a9a286b6a4672737cf61a71446f4ea639f0d74862128_s390xRHSA-2026:59556
registry.redhat.io/multicluster-engine/clusterclaimsRed Hat / RHEL
Fixed in:controller-rhel9@sha256:32d7ec0808d27c280a95f1b8868bd7e539dfc0ec49d5afdc064dd1b253a0e610_s390xRHSA-2026:59593
Fixed in:controller-rhel9@sha256:35cc5cabd17d739bd401d73850c8efe2576ea99120f313b3e4668799233c7967_ppc64leRHSA-2026:59558
Fixed in:controller-rhel9@sha256:10afacd0dfb727bcae117cb5e852cd840c81b8e45acd37c55ac75c97316b3910_amd64RHSA-2026:59558
Fixed in:controller-rhel9@sha256:7edb2ca12ef15a090ed4169cb8618bc131a02f20a7b3e2e665fd4a8a862eec95_arm64RHSA-2026:59557
Fixed in:controller-rhel9@sha256:85e38c6db2cd8334193ca48b9e9337c1f0040e4612d40d3f4b623cfd93fd5aed_s390xRHSA-2026:59579
Fixed in:controller-rhel9@sha256:c988e9854b206ec43fdce4fa6c3d3787cb438cecf936b3c2c7f78034227da6a2_s390xRHSA-2026:59557
Fixed in:controller-rhel9@sha256:397436d12ac747fdc502d412827d62f464b6e1646ae450aa62d72568800af8ac_ppc64leRHSA-2026:59579
Fixed in:controller-rhel9@sha256:b86b487802600bd2dc1bb49d0ebb90066658ed423e1c2eabb4fd85a9afac0e06_ppc64leRHSA-2026:59557
registry.redhat.io/multicluster-engine/clusterlifecycle-stateRed Hat / RHEL
Fixed in:metrics-rhel9@sha256:ed3dda6f99cb789b2fcd00768a8992fdaefd66eedc13091b4ec71636ae45180f_amd64RHSA-2026:59557
Fixed in:metrics-rhel9@sha256:b642fd4533d1dddb665aab6f731747c232cbe927b73cf8b91f4dc4b795a4c8b5_ppc64leRHSA-2026:59558
Fixed in:metrics-rhel9@sha256:44ba901f8e27917f73c8134a8becb2145bf0e91c63a36a7aca0ed6bb01742430_arm64RHSA-2026:59559
Fixed in:metrics-rhel9@sha256:2e4cc9c65bc196314868f6a1a4a5d636a0bc93c71e677a57bd5f3cdc19e0e886_s390xRHSA-2026:59593
Fixed in:metrics-rhel9@sha256:d4e1d5e9a0e9acf162aefd88f9030f0fd12faaf1b4bb976816c76844cdbfca30_s390xRHSA-2026:59559
Fixed in:metrics-rhel9@sha256:9f03f72208cecd569fe3bf59a710e52f908e68628e40bee2df001664dc521eb2_amd64RHSA-2026:59556
Fixed in:metrics-rhel9@sha256:3df72a2ea6ec6f7b738a1fa2669e3e77446b0c10dc4f0ef9dd33daaf5de26cfa_ppc64leRHSA-2026:59593
Fixed in:metrics-rhel9@sha256:0eade8656ee0509b6522696f9974a59d1ab2c7990ee346b37dcfa23c3bb5c0e3_s390xRHSA-2026:59579
registry.redhat.io/multicluster-engine/clusterlifecycle-stateRocky
Fixed in:metrics-rhel9@sha256:ed3dda6f99cb789b2fcd00768a8992fdaefd66eedc13091b4ec71636ae45180f_amd64RHSA-2026:59557
Fixed in:metrics-rhel9@sha256:dd8da58522ebc93b77350d8d90889e495313271b9700da034d2a3b93be3ef882_amd64RHSA-2026:59593
Fixed in:metrics-rhel9@sha256:a1e02b5c28ed6a11324b70762278744fa730907086bec4ae9feae9f0b09f573b_ppc64leRHSA-2026:59559
Fixed in:metrics-rhel9@sha256:fb5d99e2a5675bb37e999c5b9fcf4a70449fbcbfa983b9652275149f9a32ffc1_amd64RHSA-2026:59558
Fixed in:metrics-rhel9@sha256:9f03f72208cecd569fe3bf59a710e52f908e68628e40bee2df001664dc521eb2_amd64RHSA-2026:59556
Fixed in:metrics-rhel9@sha256:0c404dc6f49d61bc8cef0f598f7791c104712330813d87841b278b56e74eb3c3_amd64RHSA-2026:59579
Fixed in:metrics-rhel9@sha256:acd380102a9470c92bf5579445548ec59f506a8357638e528ebde1486d7d2f7a_arm64RHSA-2026:59557
Fixed in:metrics-rhel9@sha256:91e4339b46ed4d19b318858ad10e42f20e6cb6f40d8ee7417d743864c288d77d_arm64RHSA-2026:59593
registry.redhat.io/multicluster-engine/consoleRocky
Fixed in:mce-rhel9@sha256:55ecb01a4602e320c1e5f6212544f2159cfb4ee8393930f36ce4117fee5f5c2f_amd64RHSA-2026:59558
Fixed in:mce-rhel9@sha256:44b1c7a404215c579579103b8039aded503def330025c89b4a67a90a150c9568_arm64RHSA-2026:59593
Fixed in:mce-rhel9@sha256:5b8af19b7b52db3d94e987be751a6dbf8265f2398ab05de897752775ffdfd806_s390xRHSA-2026:59556
Fixed in:mce-rhel9@sha256:7d4bae0c577a4fe9cee1df1a7834a95f3738cd625d8c2c7781d6908252ddd7e4_arm64RHSA-2026:59556
Fixed in:mce-rhel9@sha256:031b03a535eb71c43d15621e56127672a34ee4bc22e7032e1410956ebae59e3a_ppc64leRHSA-2026:59559
Fixed in:mce-rhel9@sha256:a6f3a435a0494fbf57d5f6cde34db2f6a92ddaf972f10f52cd7d56b70671c482_arm64RHSA-2026:59559
Fixed in:mce-rhel9@sha256:8d3256f9df83b82e8bdef2a8d0c706695d5c9674e263755cb1db42158140c5a5_amd64RHSA-2026:59593
Fixed in:mce-rhel9@sha256:21c2a3da93702290e700c4a048f041356dd42596add6d70ef1d599eecd70f725_s390xRHSA-2026:59558
registry.redhat.io/multicluster-engine/consoleRed Hat / RHEL
Fixed in:mce-rhel9@sha256:f1c3abc9961383f78f307b4a13eb70afc98030632d6b64140be51a989f577e18_arm64RHSA-2026:59558
Fixed in:mce-rhel9@sha256:e1291921d2a43efb307f721e7cbe2059e396ac518b787bd3216268e939e6a498_arm64RHSA-2026:59579
Fixed in:mce-rhel9@sha256:afa61b8ffb34702fa11001efa74fe62cdbacf78c9a5865ddb28ca801b173093c_amd64RHSA-2026:59559
Fixed in:mce-rhel9@sha256:cb94112f676b97ced1d43d6f812c5235201c3319a4c8a4237b94aaab8e5acc6e_s390xRHSA-2026:59593
Fixed in:mce-rhel9@sha256:0250bc715e7a879518e5933678bdfe7a9ea79524fb54bbc21468bb38b87910c6_arm64RHSA-2026:59557
Fixed in:mce-rhel9@sha256:ef8495916e6317b146a3ddd007c29885eaafeabbb2bda08f56f1d11d1b459be1_s390xRHSA-2026:59557
Fixed in:mce-rhel9@sha256:031b03a535eb71c43d15621e56127672a34ee4bc22e7032e1410956ebae59e3a_ppc64leRHSA-2026:59559
Fixed in:mce-rhel9@sha256:ff6b09fd66dd89bc008235b4c9fc735261506157e859668b336d11dba9d86dc1_amd64RHSA-2026:59556
This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeChanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Exploit Intelligence
0.35%probability of exploitation in 30 days
28thpercentile
Low risk: more likely to be exploited than 28% of all known CVEs.
References
Related Vulnerabilities
Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2015-4000 | Low | 3.7 | 100% | - | Fix |
| CVE-2020-0601 | High | 8.1 | 89% | KEV | Fix |
| CVE-2009-3555 | Critical | 9.8 | 87% | - | Fix |
| CVE-2022-26923 | High | 8.8 | 84% | KEV | Fix |
| CVE-2023-27823 | Critical | 9.8 | 53% | - | - |
| CVE-2022-42979 | High | 8.8 | 24% | - | - |
Common questions
How do I fix CVE-2026-66795?
Published advisories record a fix for 52 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2026-66795 being actively exploited?
Not that we know of. CVE-2026-66795 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.35% is the estimated probability that it will be exploited in the next 30 days. That is higher than 28% of all scored CVEs.
How severe is CVE-2026-66795?
CVE-2026-66795 has a CVSS v3 base score of 9.1, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-66795 affect?
Published advisories record a fix for registry.redhat.io/multicluster (Rocky), registry.redhat.io/multicluster (Red Hat / RHEL), registry.redhat.io/multicluster-engine/addon (Red Hat / RHEL), registry.redhat.io/multicluster-engine/addon (Rocky), and 48 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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<a href="https://tridentstack.com/cve/CVE-2026-66795"><img src="https://tridentstack.com/cve/badge/CVE-2026-66795.svg" alt="CVE-2026-66795"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-25.