{"id":"BIT-keycloak-2026-15573","summary":"Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher","details":"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.","aliases":["CVE-2026-15573"],"modified":"2026-09-08T08:48:06.504285903Z","published":"2026-08-25T11:41:39.364Z","database_specific":{"cpes":["cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*","cpe:2.3:a:keycloak:keycloak:*:*:*:*:*:*:*:*"],"severity":"High"},"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:50846"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:50847"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:50848"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:50849"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-15573"},{"type":"ADVISORY","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2499593"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-15573"}],"affected":[{"package":{"name":"keycloak","ecosystem":"Bitnami","purl":"pkg:bitnami/keycloak"},"ranges":[{"type":"SEMVER","events":[{"introduced":"26.4.0"},{"fixed":"26.4.14"},{"introduced":"26.6.0"},{"fixed":"26.6.5"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/keycloak/BIT-keycloak-2026-15573.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}],"schema_version":"1.9.0"}