CVE-2026-95503
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
49/100
Published: 2026-09-22
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Adjacent
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Adjacent
AC:
High
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
High
A:
None
Description
A flaw was found in the Kerberos federation provider of Keycloak, an open-source identity and access management solution. When Kerberos password authentication is used without SPNEGO, the system fails to verify the identity of the Key Distribution Center (KDC) by requesting a server ticket. This allows an attacker on the same network to spoof the KDC and bypass the authentication process, potentially gaining unauthorized access to user accounts.
Weakness Classification (1)
References & Advisories (3)
vendor-advisory
x_refsource_REDHAT
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT