{"schema":"threatline.record/2","record":{"id":"CVE-2026-88920","aliases":[],"summary":"Apache WSS4J: SAML Sender-Vouches Authentication Bypass","details":"An authentication bypass in the DOM security processor in Apache WSS4J allows unauthenticated remote attackers to forge authenticated SOAP messages via a crafted unsigned SAML sender-vouches assertion containing an attacker-controlled key.\n\nUsers are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.","categories":["Unclassified"],"product":"Apache WSS4J","vendor":"Apache Software Foundation","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88920","source_modified_at":"2026-09-30T19:48:53.545Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Apache WSS4J","vendor":"Apache Software Foundation","versions":[{"status":"affected","version":"4.0.0","lessThan":"4.0.2","versionType":"semver"},{"status":"affected","version":"3.0.0","lessThan":"3.0.6","versionType":"semver"},{"status":"affected","version":"0","lessThan":"2.4.4","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88920","source_modified_at":"2026-09-30T19:48:53.545Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Apache WSS4J","ecosystem":null},"version":"4.0.2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88920","source_modified_at":"2026-09-30T19:48:53.545Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Apache WSS4J","ecosystem":null},"version":"3.0.6","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88920","source_modified_at":"2026-09-30T19:48:53.545Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Apache WSS4J","ecosystem":null},"version":"2.4.4","basis":"first unaffected version stated in the CVE record"}],"cvss":9.8,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00571,"percentile":0.46516,"score_date":"2026-10-23"},"published_at":"2026-09-30T11:58:00.040Z","modified_at":"2026-09-30T19:48:53.545Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-88920","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-30T19:48:53.545Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-88920","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.html/grt43m3bgbzz0mk0cnho3rcybb1j01z9","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":"2026-09-30T19:48:23.012347Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-30T19:48:53.545Z","content_hash":"3499b60176ddb035fd6f7713a41a3d743c376c0b428a4d0fa6a0f6b966454eae"}}