CVE-2026-15573 | BDVDB-2026-355350 Detail

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.

Impact#

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Exploit#

History#

1. Version 12026-08-05Record published in the CVE List.
2. Version 22026-08-31Most recent update recorded in the CVE List.