CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NCVE-2026-15573
High (8.1) in redhat. EPSS 0.5% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-551, CWE-178
- Published
- Modified
- Record from
- the NVD, synced
Affected
- redhat:build_of_keycloak
- redhat:data_grid
- redhat:jboss_enterprise_application_platform_expansion_pack
- redhat:single_sign-on