CVE-2026-15573

8.1 HIGH

Published 2026-08-05 · Updated 2026-08-10

AI risk analysis

Summary: The flaw in Keycloak's PathMatcher allows attackers to bypass security policies by manipulating URLs, granting unauthorized access.
Exploitability: Exploitation requires an authenticated user and knowledge of specific URL manipulations; moderately difficult.
Blast radius: If exploited, this could lead to unauthorized access to administrative or restricted areas within the application.
Prioritized remediation: Update Keycloak to a patched version immediately.

auth-bypasswebsecurity-policy

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-178

Vendors

redhat

Products

build of keycloak, data grid, jboss enterprise application platform expansion pack, single sign-on

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.