VULNERABILITY INTELLIGENCE

CVE-2026-15573

CVSS score8.1 HIGH
EPSS probability0.46%
CISA KEVNot currently listed
Published2026-08-05
Last modified2026-08-31
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

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.

Weakness classification

  • secalert@redhat.com: CWE-551
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-178

Primary references