Cloudanix VulnDB

CVE-2026-15573

High · 8.1

CVSS

8.1

EPSS

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Published

Aug 5, 2026

CISA due date

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The record

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.

Affected packages

Ecosystem Package Introduced Fixed

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