🛡️ CVE-2025-12390
🟡 CVSS 6.0 — Medium ✅ No Known Exploit CWE-384 NVD
6.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity Medium
CVSS Score 6.0
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
CWE CWE-384
Public Exploit ✅ No
Source NVD
Published 2025-10-28
Updated 2026-06-02
Modified 2026-02-04
Fix URL N/A

Affected Packages

Software From version Fixed in
org.keycloak:keycloak-services 26.0.0
unknown

References

Similar Threats

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