Feed/CVE-2025-12390
CVE-2025-12390MEDIUMCVSS 6.0

CVE-2025-12390

Published Oct 28, 2025·Updated Jun 17, 2026

NVD 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.

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

References

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