CVE & CISA-KEV CatalogNVD
CVE-2026-4325
MEDIUM5.3
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 attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password reset links. This could lead to unauthorized access or account compromise.
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 InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Exploit Intelligence
0.25%probability of exploitation in 30 days
16thpercentile
Low risk: more likely to be exploited than 16% of all known CVEs.
References
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 2026-04-16.