CVE & CISA-KEV CatalogNVD
CVE-2026-27889
HIGH7.5
CVSS v3
Description
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before authentication, and so is exposed to anyone who can connect to the websockets port. Versions 2.11.14 and 2.12.5 contains a fix. A workaround is available. The vulnerability only affects deployments which use WebSockets and which expose the network port to untrusted end-points. If one is able to do so, a defense in depth of restricting either of these will mitigate the attack.
How to fix
Remediation Available
nats-serverDebian
Fixed in:2.12.6-1CVE-2026-27889
registry.redhat.io/multicluster-globalhub/multicluster-globalhubRed Hat / RHEL
Fixed in:grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64RHSA-2026:21769
Fixed in:agent-rhel9@sha256:dc3c1cc6bdfbf29bf0182bacddcdde3de8517d294ca4f1516eda60f760ffe399_amd64RHSA-2026:21769
Fixed in:manager-rhel9@sha256:b70fae10e34ad67aa1f347d2e1085a92e1a28666faa273fe3c0c01a4d0780777_amd64RHSA-2026:21769
Fixed in:operator-bundle@sha256:8959841bd45bb6a15ae4a88d37234b3ba36855be6d92e358fa363c6132ab6359_amd64RHSA-2026:21769
Fixed in:rhel9-operator@sha256:48717ee862e1386928c2a20a3ed04464ad1fc3d519ef026a6fd615c13e22d51b_amd64RHSA-2026:21769
Fixed in:grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64leRHSA-2026:21769
Fixed in:agent-rhel9@sha256:62b308e48b973c04509efc66de4cdf11acc729625b75f86bab27de82a7230d14_ppc64leRHSA-2026:21769
Fixed in:manager-rhel9@sha256:42ab1234414fcdc369097e9c63bda3b4ea64c1e3eb87800a394898c91a2c43ad_ppc64leRHSA-2026:21769
Fixed in:rhel9-operator@sha256:c985ba79e21f5c623fa1b350963d6a8915043e06184cde6f2d813a5c349a4886_ppc64leRHSA-2026:21769
Fixed in:grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390xRHSA-2026:23345
Fixed in:manager-rhel9@sha256:a1dc9d34a9b9dd90eedec8b4bf5d246066ff8c964142376d190e72eca5eb6d03_ppc64leRHSA-2026:23345
Fixed in:rhel9-operator@sha256:d8b6bfdd948e9b0b423a240d2538eefa3bfd742635c27ee0db23c7af96657c4a_ppc64leRHSA-2026:23345
Fixed in:agent-rhel9@sha256:564d1f145c46663a04b05f5210388c27e888714911bcafb19bfb8a88821becc6_s390xRHSA-2026:23345
Fixed in:manager-rhel9@sha256:2b11ee4ff5d5a5dce7cd2c03b1cf088e27cf23816b1f5e9dfc11a136052a9542_s390xRHSA-2026:23345
Fixed in:rhel9-operator@sha256:f9aab6b75117767d41e24dee791df45d42758c70c5d5ef6b435564e73b3c1d6f_s390xRHSA-2026:23345
Fixed in:grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64RHSA-2026:23345
Fixed in:agent-rhel9@sha256:ba4697a2a94a5bb6e4b5e5edeebe04f24125f910ae158d070cecf73374d959f0_arm64RHSA-2026:23345
Fixed in:manager-rhel9@sha256:f2784cac203f5ecb3d9de7f1312af0aa5ada9b673ab1c3188d839e1e13a3146b_arm64RHSA-2026:23345
Fixed in:rhel9-operator@sha256:262ad6cee9e2176214103ecd866dd502d2d68b24b9f9be08e934f8fa3a285176_arm64RHSA-2026:23345
Fixed in:grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390xRHSA-2026:21769
Fixed in:agent-rhel9@sha256:fb7cd20d1a90d19fcaddfffd01a94e39dbcc9c97fc9a70e5d7eaefc570fd2dd7_s390xRHSA-2026:21769
Fixed in:manager-rhel9@sha256:19014267212e075c68e50fecbe44eabaaadadae448b28b5cfbe3275f27f9fc93_s390xRHSA-2026:21769
Fixed in:rhel9-operator@sha256:176cfe7106e81ff28564ec2cf9e4041d0fcadc7b5ae7537a9cc6db63a8914e5c_s390xRHSA-2026:21769
Fixed in:grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64RHSA-2026:21769
Fixed in:agent-rhel9@sha256:df44aad9c2e9fec1d734e494c069cb89fd7b8f33050cfe9db3bdaef4c4ad7cc3_arm64RHSA-2026:21769
Fixed in:manager-rhel9@sha256:bb02a2e251f898e1d34b6846001d13cc1e5454b071358556a77997f02f71401d_arm64RHSA-2026:21769
Fixed in:rhel9-operator@sha256:cffac2b05af519fbd27143d59321675ba8cfd2e4c1531fc15021bd8500987c62_arm64RHSA-2026:21769
Fixed in:grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64RHSA-2026:22347
Fixed in:agent-rhel9@sha256:0b9dec4d176e5565b83022c319fd5d7182e75280b18ab26c8d7c93400590b49f_amd64RHSA-2026:22347
Fixed in:manager-rhel9@sha256:06b139d24be23e09faa76eaa046a44985761256e5d4cd066e141a0f559c2eeb6_amd64RHSA-2026:22347
Fixed in:operator-bundle@sha256:fcc094ea7d3ea843c9844c02e432cfc3057a60c67b0b11aa94024452b9d04654_amd64RHSA-2026:22347
Fixed in:rhel9-operator@sha256:20e13782a2f6da9e44085635d93c45c6a62bf37cbfc6370d48ebdfb344688bb1_amd64RHSA-2026:22347
Fixed in:grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64leRHSA-2026:22347
Fixed in:agent-rhel9@sha256:1c700922d285d2c4d08f2288c7c349c96ce58d4320ea9357a746ef7370cb58fe_ppc64leRHSA-2026:22347
Fixed in:manager-rhel9@sha256:302f8ed5a96fed437997968b1f176d82a47ed82915b4dfa533d18bb0d862a47c_ppc64leRHSA-2026:22347
Fixed in:rhel9-operator@sha256:2c45a63b55be2e157cf20129502707955fe9d0ff7b7dd970ee48a2875f2df134_ppc64leRHSA-2026:22347
Fixed in:grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390xRHSA-2026:22347
Fixed in:agent-rhel9@sha256:f4186f245542f4c8bbe65958c053737d201318c94077d56b22bdcf01207109e1_s390xRHSA-2026:22347
Fixed in:manager-rhel9@sha256:3b6e453cd26458e3ae936c315676c3821027e58f2839dbc961b06f67b2107360_s390xRHSA-2026:22347
Fixed in:rhel9-operator@sha256:81949f5fee45799df9566ec4031893c1bf4f9f2d22920591056cf4129bbd54af_s390xRHSA-2026:22347
Fixed in:grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64RHSA-2026:22347
Fixed in:agent-rhel9@sha256:90d4bf9aff2231c853329b597cadf7bf05abd2ca2b11f8edda409155447af981_arm64RHSA-2026:22347
Fixed in:manager-rhel9@sha256:e558cd17db0182d6d4cdbc225a1865c80a0f60e8b5dbfcd2d8c0d9a5a35207f3_arm64RHSA-2026:22347
Fixed in:rhel9-operator@sha256:71c48f9833ee51bfea877223a14073bd79839b5d0dd85867188fbd908ae23f31_arm64RHSA-2026:22347
Fixed in:grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64RHSA-2026:23345
Fixed in:agent-rhel9@sha256:7e1aeac1da9e9c9ac413b8f9380a911e89c4c81fe5dd38656bb301ddb0918ccf_amd64RHSA-2026:23345
Fixed in:manager-rhel9@sha256:56e32b74a97b5211573194b1358613d07fd967944c0bde22eb1f9b61ef1ff1b8_amd64RHSA-2026:23345
Fixed in:operator-bundle@sha256:51bf429464a9e7f1b928bb60acb5cabc4491741884ac8e85fdee56092a2b03e8_amd64RHSA-2026:23345
Fixed in:rhel9-operator@sha256:3e619a5807582f6b5d7f50909667b9e0e3391f0166a3c322988d3b534f8cf103_amd64RHSA-2026:23345
Fixed in:grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64leRHSA-2026:23345
Fixed in:agent-rhel9@sha256:51353652e207a04ede5c7f0f11ddc82150f2ca79a110a5e85d8c6e13ccdfa8f5_ppc64leRHSA-2026:23345
registry.redhat.io/multicluster-globalhub/multicluster-globalhubRocky
Fixed in:grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64RHSA-2026:23345
Fixed in:agent-rhel9@sha256:7e1aeac1da9e9c9ac413b8f9380a911e89c4c81fe5dd38656bb301ddb0918ccf_amd64RHSA-2026:23345
Fixed in:manager-rhel9@sha256:56e32b74a97b5211573194b1358613d07fd967944c0bde22eb1f9b61ef1ff1b8_amd64RHSA-2026:23345
Fixed in:operator-bundle@sha256:51bf429464a9e7f1b928bb60acb5cabc4491741884ac8e85fdee56092a2b03e8_amd64RHSA-2026:23345
Fixed in:rhel9-operator@sha256:3e619a5807582f6b5d7f50909667b9e0e3391f0166a3c322988d3b534f8cf103_amd64RHSA-2026:23345
Fixed in:grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64leRHSA-2026:23345
Fixed in:agent-rhel9@sha256:51353652e207a04ede5c7f0f11ddc82150f2ca79a110a5e85d8c6e13ccdfa8f5_ppc64leRHSA-2026:23345
Fixed in:manager-rhel9@sha256:a1dc9d34a9b9dd90eedec8b4bf5d246066ff8c964142376d190e72eca5eb6d03_ppc64leRHSA-2026:23345
Fixed in:rhel9-operator@sha256:d8b6bfdd948e9b0b423a240d2538eefa3bfd742635c27ee0db23c7af96657c4a_ppc64leRHSA-2026:23345
Fixed in:grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390xRHSA-2026:23345
Fixed in:agent-rhel9@sha256:564d1f145c46663a04b05f5210388c27e888714911bcafb19bfb8a88821becc6_s390xRHSA-2026:23345
Fixed in:manager-rhel9@sha256:2b11ee4ff5d5a5dce7cd2c03b1cf088e27cf23816b1f5e9dfc11a136052a9542_s390xRHSA-2026:23345
Fixed in:rhel9-operator@sha256:f9aab6b75117767d41e24dee791df45d42758c70c5d5ef6b435564e73b3c1d6f_s390xRHSA-2026:23345
Fixed in:grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64RHSA-2026:23345
Fixed in:agent-rhel9@sha256:ba4697a2a94a5bb6e4b5e5edeebe04f24125f910ae158d070cecf73374d959f0_arm64RHSA-2026:23345
Fixed in:manager-rhel9@sha256:f2784cac203f5ecb3d9de7f1312af0aa5ada9b673ab1c3188d839e1e13a3146b_arm64RHSA-2026:23345
Fixed in:rhel9-operator@sha256:262ad6cee9e2176214103ecd866dd502d2d68b24b9f9be08e934f8fa3a285176_arm64RHSA-2026:23345
Fixed in:grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64RHSA-2026:21769
Fixed in:agent-rhel9@sha256:dc3c1cc6bdfbf29bf0182bacddcdde3de8517d294ca4f1516eda60f760ffe399_amd64RHSA-2026:21769
Fixed in:manager-rhel9@sha256:b70fae10e34ad67aa1f347d2e1085a92e1a28666faa273fe3c0c01a4d0780777_amd64RHSA-2026:21769
Fixed in:operator-bundle@sha256:8959841bd45bb6a15ae4a88d37234b3ba36855be6d92e358fa363c6132ab6359_amd64RHSA-2026:21769
Fixed in:rhel9-operator@sha256:48717ee862e1386928c2a20a3ed04464ad1fc3d519ef026a6fd615c13e22d51b_amd64RHSA-2026:21769
Fixed in:grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64leRHSA-2026:21769
Fixed in:agent-rhel9@sha256:62b308e48b973c04509efc66de4cdf11acc729625b75f86bab27de82a7230d14_ppc64leRHSA-2026:21769
Fixed in:manager-rhel9@sha256:42ab1234414fcdc369097e9c63bda3b4ea64c1e3eb87800a394898c91a2c43ad_ppc64leRHSA-2026:21769
Fixed in:rhel9-operator@sha256:c985ba79e21f5c623fa1b350963d6a8915043e06184cde6f2d813a5c349a4886_ppc64leRHSA-2026:21769
Fixed in:grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390xRHSA-2026:21769
Fixed in:agent-rhel9@sha256:fb7cd20d1a90d19fcaddfffd01a94e39dbcc9c97fc9a70e5d7eaefc570fd2dd7_s390xRHSA-2026:21769
Fixed in:manager-rhel9@sha256:19014267212e075c68e50fecbe44eabaaadadae448b28b5cfbe3275f27f9fc93_s390xRHSA-2026:21769
Fixed in:rhel9-operator@sha256:176cfe7106e81ff28564ec2cf9e4041d0fcadc7b5ae7537a9cc6db63a8914e5c_s390xRHSA-2026:21769
Fixed in:grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64RHSA-2026:21769
Fixed in:agent-rhel9@sha256:df44aad9c2e9fec1d734e494c069cb89fd7b8f33050cfe9db3bdaef4c4ad7cc3_arm64RHSA-2026:21769
Fixed in:manager-rhel9@sha256:bb02a2e251f898e1d34b6846001d13cc1e5454b071358556a77997f02f71401d_arm64RHSA-2026:21769
Fixed in:rhel9-operator@sha256:cffac2b05af519fbd27143d59321675ba8cfd2e4c1531fc15021bd8500987c62_arm64RHSA-2026:21769
Fixed in:grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64RHSA-2026:22347
Fixed in:agent-rhel9@sha256:0b9dec4d176e5565b83022c319fd5d7182e75280b18ab26c8d7c93400590b49f_amd64RHSA-2026:22347
Fixed in:manager-rhel9@sha256:06b139d24be23e09faa76eaa046a44985761256e5d4cd066e141a0f559c2eeb6_amd64RHSA-2026:22347
Fixed in:operator-bundle@sha256:fcc094ea7d3ea843c9844c02e432cfc3057a60c67b0b11aa94024452b9d04654_amd64RHSA-2026:22347
Fixed in:rhel9-operator@sha256:20e13782a2f6da9e44085635d93c45c6a62bf37cbfc6370d48ebdfb344688bb1_amd64RHSA-2026:22347
Fixed in:grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64leRHSA-2026:22347
Fixed in:agent-rhel9@sha256:1c700922d285d2c4d08f2288c7c349c96ce58d4320ea9357a746ef7370cb58fe_ppc64leRHSA-2026:22347
Fixed in:manager-rhel9@sha256:302f8ed5a96fed437997968b1f176d82a47ed82915b4dfa533d18bb0d862a47c_ppc64leRHSA-2026:22347
Fixed in:rhel9-operator@sha256:2c45a63b55be2e157cf20129502707955fe9d0ff7b7dd970ee48a2875f2df134_ppc64leRHSA-2026:22347
Fixed in:grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390xRHSA-2026:22347
Fixed in:agent-rhel9@sha256:f4186f245542f4c8bbe65958c053737d201318c94077d56b22bdcf01207109e1_s390xRHSA-2026:22347
Fixed in:manager-rhel9@sha256:3b6e453cd26458e3ae936c315676c3821027e58f2839dbc961b06f67b2107360_s390xRHSA-2026:22347
Fixed in:rhel9-operator@sha256:81949f5fee45799df9566ec4031893c1bf4f9f2d22920591056cf4129bbd54af_s390xRHSA-2026:22347
Fixed in:grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64RHSA-2026:22347
Fixed in:agent-rhel9@sha256:90d4bf9aff2231c853329b597cadf7bf05abd2ca2b11f8edda409155447af981_arm64RHSA-2026:22347
Fixed in:manager-rhel9@sha256:e558cd17db0182d6d4cdbc225a1865c80a0f60e8b5dbfcd2d8c0d9a5a35207f3_arm64RHSA-2026:22347
Fixed in:rhel9-operator@sha256:71c48f9833ee51bfea877223a14073bd79839b5d0dd85867188fbd908ae23f31_arm64RHSA-2026:22347
registry.redhat.io/multicluster-globalhub/multicluster-globalhub-postgresRocky
Fixed in:exporter-rhel9@sha256:9726e04b4c8cb8cb46368b8901dd9dc692a811f93b6020a055040b1c5c9b3f6a_ppc64leRHSA-2026:22347
Fixed in:exporter-rhel9@sha256:eaae81482b89e7331d356ddadf8f698e5cfffc9ce4fb616f240f30c9f044ba59_s390xRHSA-2026:21769
Fixed in:exporter-rhel9@sha256:ff7d02b17b98ef8f65368c6b93e76e4ceb683411af5c3037484acb0508f31ea1_s390xRHSA-2026:23345
Fixed in:exporter-rhel9@sha256:74635c357ec4a8697076f015ac15853ee0259e0231620fa349d687be261beae4_arm64RHSA-2026:21769
Fixed in:exporter-rhel9@sha256:556fff489ab3d6794c3cef4c10d09ceda194b02a9bf8a7bf1542e40802adeec6_arm64RHSA-2026:23345
Fixed in:exporter-rhel9@sha256:4d826566a79f4334947f04518e77c2c047127c734d6512bfaf3c2a9b3da47b1c_s390xRHSA-2026:22347
Fixed in:exporter-rhel9@sha256:07a4a707ac56ea0fb5b805e58e535cbd7503c71027ccb5a9a412e63ced8db831_ppc64leRHSA-2026:23345
Fixed in:exporter-rhel9@sha256:1c2e24a5caf18deaf56a4f9e7bae8e013de18b64e3bad8560b959d595e11272e_amd64RHSA-2026:23345
Fixed in:exporter-rhel9@sha256:6b9b507650bf0997ed9828b3d0b69777805aa33dd5b2988a2ef5b3b2bee00dbc_amd64RHSA-2026:21769
Fixed in:exporter-rhel9@sha256:82eb20a578cc227af2c38d51829d82854b60ec92a18d97df0a28ca5a7f9cfab1_amd64RHSA-2026:22347
Fixed in:exporter-rhel9@sha256:3424285f784830793954fbbe211595acc20e8b22908bb3b777c872ad26603223_arm64RHSA-2026:22347
Fixed in:exporter-rhel9@sha256:33a5f0de8fa49bd67233f9dc5f4f5858858961ecb3da4bcc5c146ce5be91bcd6_ppc64leRHSA-2026:21769
registry.redhat.io/multicluster-globalhub/multicluster-globalhub-postgresRed Hat / RHEL
Fixed in:exporter-rhel9@sha256:4d826566a79f4334947f04518e77c2c047127c734d6512bfaf3c2a9b3da47b1c_s390xRHSA-2026:22347
Fixed in:exporter-rhel9@sha256:33a5f0de8fa49bd67233f9dc5f4f5858858961ecb3da4bcc5c146ce5be91bcd6_ppc64leRHSA-2026:21769
Fixed in:exporter-rhel9@sha256:ff7d02b17b98ef8f65368c6b93e76e4ceb683411af5c3037484acb0508f31ea1_s390xRHSA-2026:23345
Fixed in:exporter-rhel9@sha256:eaae81482b89e7331d356ddadf8f698e5cfffc9ce4fb616f240f30c9f044ba59_s390xRHSA-2026:21769
Fixed in:exporter-rhel9@sha256:1c2e24a5caf18deaf56a4f9e7bae8e013de18b64e3bad8560b959d595e11272e_amd64RHSA-2026:23345
Fixed in:exporter-rhel9@sha256:3424285f784830793954fbbe211595acc20e8b22908bb3b777c872ad26603223_arm64RHSA-2026:22347
Fixed in:exporter-rhel9@sha256:74635c357ec4a8697076f015ac15853ee0259e0231620fa349d687be261beae4_arm64RHSA-2026:21769
Fixed in:exporter-rhel9@sha256:6b9b507650bf0997ed9828b3d0b69777805aa33dd5b2988a2ef5b3b2bee00dbc_amd64RHSA-2026:21769
Fixed in:exporter-rhel9@sha256:82eb20a578cc227af2c38d51829d82854b60ec92a18d97df0a28ca5a7f9cfab1_amd64RHSA-2026:22347
Fixed in:exporter-rhel9@sha256:07a4a707ac56ea0fb5b805e58e535cbd7503c71027ccb5a9a412e63ced8db831_ppc64leRHSA-2026:23345
Fixed in:exporter-rhel9@sha256:9726e04b4c8cb8cb46368b8901dd9dc692a811f93b6020a055040b1c5c9b3f6a_ppc64leRHSA-2026:22347
Fixed in:exporter-rhel9@sha256:556fff489ab3d6794c3cef4c10d09ceda194b02a9bf8a7bf1542e40802adeec6_arm64RHSA-2026:23345
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 RequiredNone
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
0.58%probability of exploitation in 30 days
45thpercentile
Moderate risk: more likely to be exploited than 45% of all known CVEs.
References
Related Vulnerabilities
Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2020-16040 | Medium | 6.5 | 100% | - | Fix |
| CVE-2019-11477 | High | 7.5 | 99% | - | Fix |
| CVE-2023-44443 | High | 7.8 | 94% | - | Fix |
| CVE-2014-0569 | High | 9.3 | 92% | - | - |
| CVE-2017-3599 | High | 7.5 | 90% | - | Fix |
| CVE-2023-21716 | Critical | 9.8 | 82% | - | Fix |
Common questions
How do I fix CVE-2026-27889?
Published advisories record a fix for 5 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-2026-27889 being actively exploited?
Not that we know of. CVE-2026-27889 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.58% is the estimated probability that it will be exploited in the next 30 days. That is higher than 45% of all scored CVEs.
How severe is CVE-2026-27889?
CVE-2026-27889 has a CVSS v3 base score of 7.5, rated high. 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-2026-27889 affect?
Published advisories record a fix for nats-server (Debian), registry.redhat.io/multicluster-globalhub/multicluster-globalhub (Red Hat / RHEL), registry.redhat.io/multicluster-globalhub/multicluster-globalhub (Rocky), registry.redhat.io/multicluster-globalhub/multicluster-globalhub-postgres (Rocky), and 1 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2026-27889
Markdown
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<a href="https://tridentstack.com/cve/CVE-2026-27889"><img src="https://tridentstack.com/cve/badge/CVE-2026-27889.svg" alt="CVE-2026-27889"></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 2026-08-10.