CVE-2026-15573
HIGH
NVD
CVSS Score
8.1
Severity
HIGH
Published
Aug 05, 2026
Vendor
unknown
Description
A flaw was found in Keycloak's Authorization Services. The component responsible for matching request paths to security policies (PathMatcher) does not properly normalize URIs before comparison. By adding extra characters like a trailing slash or matrix parameters to a URL, an attacker can trick the system into applying a less restrictive security policy than intended. This allows an authenticated user to access administrative or restricted areas they should not have permission to see.