CVE-2025-12390

CVE-2025-12390CVE-2025-12390

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.

Scoring

CVSS 6.0 ()
VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
Last modified2026-10-18
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.