{"schema":"threatline.record/2","record":{"id":"CVE-2026-0976","aliases":["GHSA-v897-pv23-r8cw"],"summary":"Keycloak has an improper input validation vulnerability","details":"A flaw was found in Keycloak. This improper input validation vulnerability occurs because Keycloak accepts RFC-compliant matrix parameters in URL path segments, while common reverse proxy configurations may ignore or mishandle them. A remote attacker can craft requests to mask path segments, potentially bypassing proxy-level path filtering. This could expose administrative or sensitive endpoints that operators believe are not externally reachable.","categories":["Frameworks"],"product":"org.keycloak:keycloak-quarkus-server","vendor":"Red Hat","ecosystem":"maven","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-v897-pv23-r8cw","source_modified_at":"2026-10-23T00:32:50Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"maven","name":"org.keycloak:keycloak-quarkus-server"},"range":"<= 26.2.5"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-0976","source_modified_at":"2026-10-22T21:17:19.726Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Red Hat build of Keycloak 26.4.9","vendor":"Red Hat","versions":[],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-0976","source_modified_at":"2026-10-22T21:17:19.726Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Red Hat Build of Keycloak","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-0976","source_modified_at":"2026-10-22T21:17:19.726Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Red Hat JBoss Enterprise Application Platform 8","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-0976","source_modified_at":"2026-10-22T21:17:19.726Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Red Hat JBoss Enterprise Application Platform 8","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-0976","source_modified_at":"2026-10-22T21:17:19.726Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Red Hat JBoss Enterprise Application Platform 8","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-0976","source_modified_at":"2026-10-22T21:17:19.726Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-0976","source_modified_at":"2026-10-22T21:17:19.726Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-0976","source_modified_at":"2026-10-22T21:17:19.726Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-v897-pv23-r8cw","source_modified_at":"2026-10-23T00:45:08.188819869Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"org.keycloak:keycloak-quarkus-server","ecosystem":"Maven","purl":"pkg:maven/org.keycloak/keycloak-quarkus-server"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"26.2.5"}]}],"versions":["12.0.0","12.0.1","12.0.2","12.0.3","12.0.4","13.0.0","13.0.1","14.0.0","15.0.0","15.0.1","15.0.2","15.1.0","15.1.1","16.0.0","16.1.0","16.1.1","17.0.0","17.0.1","18.0.0","18.0.1","18.0.2","19.0.0","19.0.1","19.0.2","19.0.3","20.0.0","20.0.1","20.0.2","20.0.3","20.0.4","20.0.5","21.0.0","21.0.1","21.0.2","21.1.0","21.1.1","21.1.2","22.0.0","22.0.1","22.0.2","22.0.3","22.0.4","22.0.5","23.0.0","23.0.1","23.0.2","23.0.3","23.0.4","23.0.5","23.0.6"]}],"fixed_versions":[],"cvss":3.7,"severity":"Low","kev":{"listed":false},"epss":{"probability":0.00453,"percentile":0.38396,"score_date":"2026-10-23"},"published_at":"2026-01-15T12:06:21.251Z","modified_at":"2026-10-23T00:45:08.188819869Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-v897-pv23-r8cw","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T00:32:50Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-0976","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-22T21:17:19.726Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-v897-pv23-r8cw","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T00:45:08.188819869Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-0976","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0976","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://access.redhat.com/security/cve/CVE-2026-0976","tags":["vdb-entry","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2429869","tags":["issue-tracking","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://access.redhat.com/errata/RHSA-2026:2365","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://github.com/advisories/GHSA-v897-pv23-r8cw","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-01-15T14:44:09.361820Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-23T00:45:08.188819869Z","content_hash":"2c28c242d4ff849022fdc6119a4599bf01ba44dbc1870e7c9ce310099f817a4c"}}