CVE-2026-96447
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
48/100
Published: 2026-11-06
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Network
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
Low
UI:
None
S:
Unchanged
C:
Low
I:
Low
A:
None
Description
A flaw was found in the TokenManager component of Keycloak, an open-source identity and access management solution. The issue occurs during the validation of stateless access tokens when the original user ID no longer exists. Keycloak incorrectly falls back to using the username to identify the user without verifying if the identity matches the original token subject. This could allow an attacker with an old token to gain access to a newly created service account if it shares the same client ID as a previously deleted one.
Weakness Classification (1)
References & Advisories (4)
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT