PT-2025-45767 · Maven · Org.Keycloak:Keycloak-Services

Published 2025-10-28 · Updated 2025-10-28

OSV

CVSS v3.1

6.0

Medium

Base vector

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

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

Session Fixation

Weakness Enumeration

CWE-384

Related Identifiers

GHSA-RG35-5V25-MQVP

Affected Products

Org.Keycloak:Keycloak-Services

References · 16

• https://osv.dev/vulnerability/GHSA-rg35-5v25-mqvp · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-12390 · Security Note
• https://github.com/keycloak/keycloak · Note
• https://github.com/keycloak/keycloak/issues/43853 · Note
• https://github.com/keycloak/keycloak/commit/ef75a4dc50aa9459777494e4b88655100bf2ac80 · Note
• https://github.com/keycloak/keycloak/commit/5344aada5ee06b02ec3a9e0f52fa381d085b6282 · Note
• https://github.com/keycloak/keycloak/commit/b46fab230824a2304daafe74be019e8bd4ee590a · Note
• https://github.com/keycloak/keycloak/issues/32197 · Note
• https://github.com/keycloak/keycloak/discussions/31265 · Note
• https://github.com/keycloak/keycloak/commit/d82438a611f2f869f1966c13012953fe963a493d · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2406793 · Note
• https://access.redhat.com/errata/RHSA-2025:22088 · Note
• https://access.redhat.com/errata/RHSA-2025:21370 · Note
• https://access.redhat.com/security/cve/CVE-2025-12390 · Note
• https://access.redhat.com/errata/RHSA-2025:22089 · Note