CVE & CISA-KEV CatalogNVD
CVE-2026-4282
HIGH7.4
CVSS v3
Description
A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation.
How to fix
Remediation Available
rhbk/keycloakRed Hat / RHEL
Fixed in:rhel9@sha256:a4cb583985eb220ad05b1983a98a5a50e2b76c15e6f56152045591e3994f37d1_ppc64leRHSA-2026:6478
Fixed in:rhel9-operator@sha256:715a5c6cc9061fc0305370a33f5b69a96ba7bfdb23b706a567b489fc05b05e06_ppc64leRHSA-2026:6478
Fixed in:rhel9@sha256:dc54248ad9357fbd737e6983e6d8d0c7e845e39ed6558bd7c39f7a7573459489_amd64RHSA-2026:6478
Fixed in:operator-bundle@sha256:7fb041b0e2b43954c3a83b58fd885b1cdc5bb32275e06c4c72955da5b78255c3_amd64RHSA-2026:6478
Fixed in:rhel9-operator@sha256:1a7ac3c798d83cc37dd750ed44223630f4ebff937534a59a9e9ad029dbf31a0f_amd64RHSA-2026:6478
Fixed in:rhel9@sha256:c1c1cb36f70ca142a789b359f9a120d321f58adc44e2c97a49c2d6f270d15bd9_arm64RHSA-2026:6478
Fixed in:rhel9-operator@sha256:c68d195c2d19568d9789648ef347a3388da453c83120d696453333c34a564347_arm64RHSA-2026:6478
Fixed in:rhel9@sha256:33fc8c6edb3c5c2df302ea53a89454320e08ff4660ba84d0a78f6c67178dfb16_s390xRHSA-2026:6478
Fixed in:rhel9-operator@sha256:0d90a1c28652b5f73ea90f78968548178cf710121fcb13774a467aeb9c30ab09_s390xRHSA-2026:6478
Fixed in:rhel9@sha256:b3fe3f4c74e96a2daf735fe5e8df98b2fa6f023cfda0c7cd4915a83556e14efb_amd64RHSA-2026:6476
Fixed in:operator-bundle@sha256:d80f27078e17321d4b194820a9c325c47b8cc3e431ac37c84a6c5b2b52b009e6_amd64RHSA-2026:6476
Fixed in:rhel9-operator@sha256:31378e237970d0c5c483ec2dd3de6a39adfb7cdfe13c5d106be39088859271e6_amd64RHSA-2026:6476
Fixed in:rhel9@sha256:4065d584a57daa2aa2259afa19844f6308e2f6a252b08738c809002cc84aa606_s390xRHSA-2026:6476
Fixed in:rhel9-operator@sha256:6c0c1d05bb893e1d598ffc5e953f1287d36e78f6b1938c430e0bc19e22343ae4_s390xRHSA-2026:6476
Fixed in:rhel9@sha256:4c4f3e098f715efc174a4a01803b7133ca7c2b744ea4b8151c7edcae608d9531_ppc64leRHSA-2026:6476
Fixed in:rhel9-operator@sha256:47fa46896eda2f3c51657f6bc9a024d63f3d306f4726ead3fa46ef5796696e07_ppc64leRHSA-2026:6476
Fixed in:rhel9@sha256:10b97dd8e38ce50457a121e53d53472877cc3aa185e7c4b23da191c00e914af2_arm64RHSA-2026:6476
Fixed in:rhel9-operator@sha256:1880e406eab1303dd1faa08694ff2cb33901e1e69272a2f9cdf5f5af6941bd84_arm64RHSA-2026:6476
rhbk/keycloakRocky
Fixed in:rhel9@sha256:a4cb583985eb220ad05b1983a98a5a50e2b76c15e6f56152045591e3994f37d1_ppc64leRHSA-2026:6478
Fixed in:rhel9-operator@sha256:715a5c6cc9061fc0305370a33f5b69a96ba7bfdb23b706a567b489fc05b05e06_ppc64leRHSA-2026:6478
Fixed in:rhel9@sha256:dc54248ad9357fbd737e6983e6d8d0c7e845e39ed6558bd7c39f7a7573459489_amd64RHSA-2026:6478
Fixed in:operator-bundle@sha256:7fb041b0e2b43954c3a83b58fd885b1cdc5bb32275e06c4c72955da5b78255c3_amd64RHSA-2026:6478
Fixed in:rhel9-operator@sha256:1a7ac3c798d83cc37dd750ed44223630f4ebff937534a59a9e9ad029dbf31a0f_amd64RHSA-2026:6478
Fixed in:rhel9@sha256:c1c1cb36f70ca142a789b359f9a120d321f58adc44e2c97a49c2d6f270d15bd9_arm64RHSA-2026:6478
Fixed in:rhel9-operator@sha256:c68d195c2d19568d9789648ef347a3388da453c83120d696453333c34a564347_arm64RHSA-2026:6478
Fixed in:rhel9@sha256:33fc8c6edb3c5c2df302ea53a89454320e08ff4660ba84d0a78f6c67178dfb16_s390xRHSA-2026:6478
Fixed in:rhel9-operator@sha256:0d90a1c28652b5f73ea90f78968548178cf710121fcb13774a467aeb9c30ab09_s390xRHSA-2026:6478
Fixed in:rhel9@sha256:b3fe3f4c74e96a2daf735fe5e8df98b2fa6f023cfda0c7cd4915a83556e14efb_amd64RHSA-2026:6476
Fixed in:operator-bundle@sha256:d80f27078e17321d4b194820a9c325c47b8cc3e431ac37c84a6c5b2b52b009e6_amd64RHSA-2026:6476
Fixed in:rhel9-operator@sha256:31378e237970d0c5c483ec2dd3de6a39adfb7cdfe13c5d106be39088859271e6_amd64RHSA-2026:6476
Fixed in:rhel9@sha256:4065d584a57daa2aa2259afa19844f6308e2f6a252b08738c809002cc84aa606_s390xRHSA-2026:6476
Fixed in:rhel9-operator@sha256:6c0c1d05bb893e1d598ffc5e953f1287d36e78f6b1938c430e0bc19e22343ae4_s390xRHSA-2026:6476
Fixed in:rhel9@sha256:4c4f3e098f715efc174a4a01803b7133ca7c2b744ea4b8151c7edcae608d9531_ppc64leRHSA-2026:6476
Fixed in:rhel9-operator@sha256:47fa46896eda2f3c51657f6bc9a024d63f3d306f4726ead3fa46ef5796696e07_ppc64leRHSA-2026:6476
Fixed in:rhel9@sha256:10b97dd8e38ce50457a121e53d53472877cc3aa185e7c4b23da191c00e914af2_arm64RHSA-2026:6476
Fixed in:rhel9-operator@sha256:1880e406eab1303dd1faa08694ff2cb33901e1e69272a2f9cdf5f5af6941bd84_arm64RHSA-2026:6476
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 ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploit Intelligence
0.42%probability of exploitation in 30 days
35thpercentile
Low risk: more likely to be exploited than 35% of all known CVEs.
References
Vendor Advisory6
Other references1
Related Vulnerabilities
Other CWE-653 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2025-1974 | Critical | 9.8 | 99% | - | - |
| CVE-2025-57738 | High | 7.2 | 23% | - | Fix |
| CVE-2025-21590 | Medium | 4.4 | 1.7% | KEV | - |
| CVE-2026-24781 | Critical | 9.8 | 1.2% | - | Fix |
| CVE-2024-0135 | High | 7.6 | 1.1% | - | Fix |
| CVE-2026-43997 | Critical | 10.0 | 1.0% | - | Fix |
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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 2026-07-15.