CVE-2026-95503: medium-severity vulnerability in Red Hat Build of Keycloak
Keycloak-services: keycloak-services: potential kdc spoofing bypass when kerberos password authentication is enabled
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.8epss 0.2%
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.
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Related CVEs — Red Hat Build of Keycloak
In the same product, most dangerous first.
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