High severity8.1NVD Advisory· Published Aug 5, 2026· Updated Aug 31, 2026
CVE-2026-15573
CVE-2026-15573
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6- cpe:2.3:a:redhat:jboss_enterprise_application_platform_expansion_pack:-:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
6- access.redhat.com/errata/RHSA-2026:50846nvdVendor Advisory
- access.redhat.com/errata/RHSA-2026:50847nvdVendor Advisory
- access.redhat.com/errata/RHSA-2026:50848nvdVendor Advisory
- access.redhat.com/errata/RHSA-2026:50849nvdVendor Advisory
- access.redhat.com/security/cve/CVE-2026-15573nvdVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor Advisory
News mentions
1- Keycloak: Three High Severity Vulnerabilities Disclosed Together in SAML, DCR, and Auth ServicesVypr Intelligence · Aug 5, 2026