CVE-2026-95503
Medium
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.
SeverityMedium
CVSS6.8
Exploit probability—
Product
Red Hat Build of Keycloak
PublishedSep 22, 2026
First seenSep 22, 2026
Weakness typeCWE-347CWE-347
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Red Hat Build of Keycloak | No range specified | — |
| Red Hat Red Hat Single Sign-On 7 | No range specified | — |
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