{"id":"CVE-2026-88920","state":"PUBLISHED","title":"Apache WSS4J: SAML Sender-Vouches Authentication Bypass","description":"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.","publishedAt":"2026-09-30T11:58:00.040Z","updatedAt":"2026-09-30T19:48:53.545Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache WSS4J"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache WSS4J","packageName":"org.apache.wss4j:wss4j-ws-security-dom","packageURL":"pkg:maven/org.apache.wss4j/wss4j-ws-security-dom","defaultStatus":"unaffected","versions":[{"version":"4.0.0","status":"affected","lessThan":"4.0.2","versionType":"semver"},{"version":"3.0.0","status":"affected","lessThan":"3.0.6","versionType":"semver"},{"version":"0","status":"affected","lessThan":"2.4.4","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"}],"references":["https://lists.apache.org/thread.html/grt43m3bgbzz0mk0cnho3rcybb1j01z9","http://www.openwall.com/lists/oss-security/2026/09/30/10"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/88xxx/CVE-2026-88920.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-88920","state":"PUBLISHED","datePublished":"2026-09-30T11:58:00.040Z","dateUpdated":"2026-09-30T19:48:53.545Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-09-10T13:32:10.370Z"},"containers":{"cna":{"title":"Apache WSS4J: SAML Sender-Vouches Authentication Bypass","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache WSS4J","packageName":"org.apache.wss4j:wss4j-ws-security-dom","packageURL":"pkg:maven/org.apache.wss4j/wss4j-ws-security-dom","defaultStatus":"unaffected","versions":[{"version":"4.0.0","status":"affected","lessThan":"4.0.2","versionType":"semver"},{"version":"3.0.0","status":"affected","lessThan":"3.0.6","versionType":"semver"},{"version":"0","status":"affected","lessThan":"2.4.4","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"}],"references":[{"url":"https://lists.apache.org/thread.html/grt43m3bgbzz0mk0cnho3rcybb1j01z9","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"important"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-09-30T11:58:00.040Z"},"source":{"discovery":"UNKNOWN"},"credits":[{"lang":"en","value":"Reported by n0mi1k","type":"finder"}],"x_generator":{"engine":"Vulnogram 1.0.3"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/09/30/10"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-09-30T12:12:22.214Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-30T19:48:23.012347Z","id":"CVE-2026-88920","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","type":"CWE","lang":"en","description":"CWE-287 Improper Authentication"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-30T19:48:53.545Z"}}]}}}