CVE WatchAug 31, 2026

CVE-2026-15573

A flaw was found in Keycloak's Authorization Services. The component responsible for matching request paths to security policies (PathMatche

CVSS

8.1

High

EPSS

0.5%

p39

KEV

—

Exploit Today

0-100

Published: Aug 5, 2026 · Last modified: Aug 31, 2026 · CWE-551 · CWE-178

EPSS · 30d

0.5%EPSS · 30 days0.5%

2026-09-242026-10-23

Technical 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.

Official references

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