{"schema":"threatline.record/2","record":{"id":"CVE-2026-76183","aliases":[],"summary":"Apache Tomcat: Bypass of security constraints for WebSocket endpoints","details":"Authentication Bypass by Alternate Name vulnerability in Apache Tomcat allowed the security constraints for any WebSocket endpoint to be bypassed.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.\n\n\n\nThe following versions were EOS at the time the CVE was created but are \nknown to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109. Other unsupported versions may also be affected.\n\n\n\n\nUsers are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.","categories":["Web servers"],"product":"Apache Tomcat","vendor":"Apache Software Foundation","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-76183","source_modified_at":"2026-09-30T14:54:21.515Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Apache Tomcat","vendor":"Apache Software Foundation","versions":[{"status":"affected","version":"11.0.0-M1","lessThanOrEqual":"11.0.25","versionType":"semver"},{"status":"affected","version":"10.1.0-M1","lessThanOrEqual":"10.1.59","versionType":"semver"},{"status":"affected","version":"9.0.0.M1","lessThanOrEqual":"9.0.121","versionType":"semver"},{"status":"affected","version":"8.5.0","lessThanOrEqual":"8.5.100","versionType":"semver"},{"status":"affected","version":"7.0.43","lessThanOrEqual":"7.0.109","versionType":"semver"},{"status":"unaffected","version":"0","lessThan":"7.0.43","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":9.8,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.0039,"percentile":0.31897,"score_date":"2026-10-23"},"published_at":"2026-09-23T11:16:09.907Z","modified_at":"2026-09-30T14:54:21.515Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-76183","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-09-30T14:54:21.515Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-76183","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://lists.apache.org/thread/45mxk8nj2q8pkhct6lfxkvtm2jpywrsp","tags":["vendor-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"total","assessed_at":"2026-09-23T15:33:34.949308Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-09-30T14:54:21.515Z","content_hash":"42d1e90326017b3dbd4bd09369b481a3f025327671eaed19e04b5848a834d575"}}