Keycloak: keycloak: replay of action tokens via improper handling of single-use entries
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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-4325US | — | — | ||
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 arbi… | ||||
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references
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2026:6475ADVISORY
- https://access.redhat.com/errata/RHSA-2026:6476ADVISORY
- https://access.redhat.com/errata/RHSA-2026:6477ADVISORY
- https://access.redhat.com/errata/RHSA-2026:6478ADVISORY
- https://access.redhat.com/security/cve/CVE-2026-4325ADVISORY
- https://bugzilla.redhat.com/show_bug.cgi?id=2448351ADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2026-4325WEB
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