Riskcovery

CVE-2026-4325

Keycloak: keycloak: replay of action tokens via improper handling of single-use entries

State
Published
Severity
5.3 Medium
Published
Apr 2, 2026
Updated
Apr 7, 2026
Reserved
Mar 17, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:Nredhat

Weaknesses

  • CWE-653 Improper Isolation or Compartmentalization

Affected Products

ProductVersions
Red Hat build of Keycloak 26.2Red Hat
  • 26.2.15-1 and laterNot affected
Red Hat build of Keycloak 26.2Red Hat
  • 26.2-18 and laterNot affected
Red Hat build of Keycloak 26.2Red Hat
  • 26.2-18 and laterNot affected
Red Hat build of Keycloak 26.2.15Red Hat
    Red Hat build of Keycloak 26.4Red Hat
    • 26.4.11-1 and laterNot affected
    Red Hat build of Keycloak 26.4Red Hat
    • 26.4-14 and laterNot affected
    Red Hat build of Keycloak 26.4Red Hat
    • 26.4-14 and laterNot affected
    Red Hat build of Keycloak 26.4.11Red Hat

      References

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