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CVE-2025-12390

6.0 medium SSVC exploitation: none Deferred
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 6.0NVD modified 2026-10-18 21:10

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 7