Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4.14-1 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-22 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-22 before * |
| Red Hat / Red Hat build of Keycloak 26.4.14 | unaffected |
| Red Hat / Red Hat build of Keycloak 26.4.14 | unaffected |
| Red Hat / Red Hat build of Keycloak 26.6 | unaffected 26.6.5-1 before * |
| Red Hat / Red Hat build of Keycloak 26.6 | unaffected 26.6-11 before * |
| Red Hat / Red Hat build of Keycloak 26.6 | unaffected 26.6-11 before * |
| Red Hat / Red Hat build of Keycloak 26.6.5 | unaffected |
| Red Hat / Red Hat build of Keycloak 26.6.5 | unaffected |
| Red Hat / Red Hat build of Keycloak 26.6.5 | unaffected |
| Red Hat / Red Hat Data Grid 8 | affected |
| Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack | unaffected |
| Red Hat / Red Hat Single Sign-On 7 | affected |
CWE
CWE-551
References
- https://access.redhat.com/errata/RHSA-2026:50846
- https://access.redhat.com/errata/RHSA-2026:50847
- https://access.redhat.com/errata/RHSA-2026:50848
- https://access.redhat.com/errata/RHSA-2026:50849
- https://access.redhat.com/security/cve/CVE-2026-15573
- https://bugzilla.redhat.com/show_bug.cgi?id=2499593
ADP enrichment
No English description supplied.
No references supplied.