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CVE PROGRAM SOURCE RECORD6.0 Medium

CVE-2025-12390

Org.keycloak.protocol.oidc.endpoints.logoutendpoint: offline session takeover due to reused authentication session id

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Status
Published
Published
Updated
Assigning organization
redhat

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Keycloak keycloak

Default version status: unaffected

  • 0 to < 26.0.0affected

Red Hat Red Hat build of Keycloak 26.2

Default version status: affected

  • 26.2.11-1 to < *unaffected

Red Hat Red Hat build of Keycloak 26.2

Default version status: affected

  • 26.2-12 to < *unaffected

Red Hat Red Hat build of Keycloak 26.2

Default version status: affected

  • 26.2-12 to < *unaffected

Red Hat Red Hat build of Keycloak 26.2.11

Default version status: unaffected

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4.4-1 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4-3 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4-3 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4.4

Default version status: unaffected

References