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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-12390 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://access.redhat.com/errata/RHSA-2025:21370 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2025:21371 Red Hat, Inc.
https://access.redhat.com/security/cve/CVE-2025-12390 Red Hat, Inc.
https://bugzilla.redhat.com/show_bug.cgi?id=2406793 Red Hat, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-384 Session Fixation Red Hat, Inc.  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-12390
NVD Published Date:
10/28/2025
NVD Last Modified:
11/13/2025
Source:
Red Hat, Inc.