medium5.3
CVE-2026-4325
Keycloak: Replay of action tokens via improper handling of single-use entries
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.keycloak:keycloak-services | < 26.5.7 | 26.5.7 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Redhat | Build Of Keycloak | All versions Versions 26.2, 26.2.15, 26.4, 26.4.11 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://access.redhat.com/errata/RHSA-2026:6475
- https://access.redhat.com/errata/RHSA-2026:6476
- https://access.redhat.com/errata/RHSA-2026:6477
- https://access.redhat.com/errata/RHSA-2026:6478
- https://access.redhat.com/security/cve/CVE-2026-4325
- https://bugzilla.redhat.com/show_bug.cgi?id=2448351
- https://github.com/advisories/GHSA-rx66-hj7g-28h7
- https://nvd.nist.gov/vuln/detail/CVE-2026-4325
- https://github.com/keycloak/keycloak/issues/47715
- https://github.com/keycloak/keycloak/commit/9046f201125a6fd6be9c116b99d348509d99d4a5