CVE-2025-12390 (GCVE-0-2025-12390)
Vulnerability from cvelistv5
Published
2025-10-28 13:23
Modified
2025-11-28 03:36
Severity ?
6.0 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
CWE
Summary
A flaw was found in Keycloak. In Keycloak where a user can accidentally get access to another user's session if both use the same device and browser. This happens because Keycloak sometimes reuses session identifiers and doesn’t clean up properly during logout when browser cookies are missing. As a result, one user may receive tokens that belong to another user.
References
Impacted products
Vendor Product Version
Red Hat Red Hat build of Keycloak 26.2 Unaffected: 26.2.11-1   < *
    cpe:/a:redhat:build_keycloak:26.2::el9
 Create a notification for this product.
   Red Hat Red Hat build of Keycloak 26.2 Unaffected: 26.2-12   < *
    cpe:/a:redhat:build_keycloak:26.2::el9
 Create a notification for this product.
   Red Hat Red Hat build of Keycloak 26.2 Unaffected: 26.2-12   < *
    cpe:/a:redhat:build_keycloak:26.2::el9
 Create a notification for this product.
   Red Hat Red Hat build of Keycloak 26.2.11     cpe:/a:redhat:build_keycloak:26.2::el9
 Create a notification for this product.
   Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4.4-1   < *
    cpe:/a:redhat:build_keycloak:26.4::el9
 Create a notification for this product.
   Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-3   < *
    cpe:/a:redhat:build_keycloak:26.4::el9
 Create a notification for this product.
   Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-3   < *
    cpe:/a:redhat:build_keycloak:26.4::el9
 Create a notification for this product.
   Red Hat Red Hat build of Keycloak 26.4.4     cpe:/a:redhat:build_keycloak:26.4::el9
 Create a notification for this product.
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