{"id":"CVE-2026-15573","aliases":["BIT-keycloak-2026-15573","EUVD-2026-53381","GHSA-6j7g-hr6v-3hxc"],"status":"published","title":"Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher","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.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00459,"percentile":0.40075,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-178","CWE-551"],"published":"2026-08-05T13:50:03Z","modified":"2026-09-08T08:48:06Z","fixes":[{"ecosystem":"Bitnami","package":"keycloak","fixed_in":["26.4.14","26.6.5"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"keycloak","ranges":[{"type":"SEMVER","events":[{"introduced":"26.4.0"},{"fixed":"26.4.14"},{"introduced":"26.6.0"},{"fixed":"26.6.5"}]}]}],"products":[{"vendor":"red hat","product":"red hat build of keycloak 26.4"},{"vendor":"red hat","product":"red hat build of keycloak 26.4.14"},{"vendor":"red hat","product":"red hat build of keycloak 26.6"},{"vendor":"red hat","product":"red hat build of keycloak 26.6.5"},{"vendor":"red hat","product":"red hat data grid 8"},{"vendor":"red hat","product":"red hat jboss enterprise application platform expansion pack"},{"vendor":"red hat","product":"red hat single sign-on 7"},{"vendor":"redhat","product":"build_of_keycloak"},{"vendor":"redhat","product":"data_grid"},{"vendor":"redhat","product":"jboss_enterprise_application_platform_expansion_pack"},{"vendor":"redhat","product":"single_sign-on"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:50846","tags":["vendor-advisory","x_refsource_REDHAT","Vendor Advisory","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:50847","tags":["vendor-advisory","x_refsource_REDHAT","Vendor Advisory","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:50848","tags":["vendor-advisory","x_refsource_REDHAT","Vendor Advisory","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:50849","tags":["vendor-advisory","x_refsource_REDHAT","Vendor Advisory","advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-15573","tags":["vdb-entry","x_refsource_REDHAT","Vendor Advisory","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2499593","tags":["issue-tracking","x_refsource_REDHAT","Issue Tracking","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-15573","tags":["web"]},{"url":"https://github.com/advisories/GHSA-6j7g-hr6v-3hxc"}],"sources":{"cve":[{"id":"CVE-2026-15573","title":"Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher","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.","status":"published","published":"2026-08-05T13:50:03.53Z","modified":"2026-08-31T09:43:55.904Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-551","CWE-178"],"updated_at":"2026-11-02T13:47:51.033687Z"}],"euvd":[{"id":"EUVD-2026-53381","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.","status":"published","published":"2026-08-05T13:50:03Z","modified":"2026-08-31T09:43:55Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T18:01:21.466916Z"}],"ghsa":[{"id":"GHSA-6j7g-hr6v-3hxc","title":"A flaw was found in Keycloak's Authorization Services. The component responsible for matching...","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.","status":"published","published":"2026-08-05T15:32:22Z","modified":"2026-08-31T12:31:28Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-178","CWE-551"],"updated_at":"2026-11-02T15:11:11.297642Z"}],"nvd":[{"id":"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.","status":"published","published":"2026-08-05T15:16:36.397Z","modified":"2026-08-31T10:16:48.89Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-551","CWE-178"],"updated_at":"2026-11-02T14:12:35.031043Z"}],"osv":[{"id":"BIT-keycloak-2026-15573","title":"Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher","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.","status":"published","published":"2026-08-25T11:41:39.364Z","modified":"2026-09-08T08:48:06.504285903Z","updated_at":"2026-11-02T15:28:32.162822Z"}]}}