{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-88920", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-09-10T13:32:10.370Z", "datePublished": "2026-09-30T11:58:00.040Z", "dateUpdated": "2026-09-30T19:48:53.545Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-09-30T11:58:00.040Z" }, "title": "Apache WSS4J: SAML Sender-Vouches Authentication Bypass", "source": { "discovery": "UNKNOWN" }, "affected": [ { "vendor": "Apache Software Foundation", "product": "Apache WSS4J", "packageURL": "pkg:maven/org.apache.wss4j/wss4j-ws-security-dom", "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", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.wss4j:wss4j-ws-security-dom" } ], "descriptions": [ { "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.", "lang": "en", "supportingMedia": [ { "type": "text/html", "base64": false, "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.

Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue." } ] } ], "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" } ] } ], "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": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-09-30T12:12:22.214Z" } }, { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-287", "lang": "en", "description": "CWE-287 Improper Authentication" } ] } ], "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" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-30T19:48:53.545Z" } } ] } }