CVE-2026-107937

{"id": "CVE-2026-107937", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-107937", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-15T17:45:18.146774Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache CXF", "versions": [{"status": "affected", "version": "4.2.0", "lessThan": "4.2.4", "versionType": "semver"}, {"status": "affected", "version": "4.0.0", "lessThan": "4.1.9", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "3.6.13", "versionType": "semver"}], "packageURL": "pkg:maven/org.apache.cxf/cxf-core", "packageName": "org.apache.cxf:cxf-core", "collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected"}]}], "published": "2026-10-09T11:17:02.107", "references": [{"url": "https://lists.apache.org/thread.html/x9twtpv3d04qj83t6w9xkh9y2q28zztj", "tags": ["Issue Tracking", "Vendor Advisory", "Mailing List"], "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/10/09/12", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "In Apache CXF, the parser for multipart/MTOM attachment part headers did not fully enforce the configured attachment-max-header-size (default 300 characters) and attachment-headers-max-count (default 500) limits. The size limit was applied only to each physical line, not to a header value built from continuation lines or to the combined values of a repeated header. The count limit was checked against the number of distinct header names, not the total number of header lines. A remote, unauthenticated attacker could send a multipart request with very large folded or repeated part headers. The server would then allocate memory without bound, causing a denial of service.\u00a0\nUsers are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue."}], "lastModified": "2026-10-16T18:10:19.410", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3CD2E496-3098-41C3-94A5-26A788711F15", "versionEndExcluding": "3.6.13"}, {"criteria": "cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "989264A3-989E-4ED7-BA9A-74F6589B0282", "versionEndExcluding": "4.1.9", "versionStartIncluding": "4.0.0"}, {"criteria": "cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EA32F98B-64AC-4E85-BD29-6287A9883A00", "versionEndExcluding": "4.2.4", "versionStartIncluding": "4.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}