CVE-2026-0976

Name of the Vulnerable Software and Affected Versions Keycloak (affected versions not specified)

Description Improper input validation occurs because Keycloak accepts RFC-compliant matrix parameters in URL path segments. Since common reverse proxy configurations may ignore or mishandle these parameters, a remote attacker can craft requests to mask path segments. This allows for the potential bypass of proxy-level path filtering, which could expose sensitive or administrative endpoints intended to be inaccessible from external networks.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.