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        "cveId": "CVE-2026-107937",
        "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "state": "PUBLISHED",
        "assignerShortName": "apache",
        "dateReserved": "2026-10-09T09:12:15.139Z",
        "datePublished": "2026-10-09T10:19:53.377Z",
        "dateUpdated": "2026-10-15T17:45:25.955Z"
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                "shortName": "apache",
                "dateUpdated": "2026-10-09T10:19:53.377Z"
            },
            "title": "Apache CXF: The attachment header size and count limits can be bypassed, which allows denial of service through memory exhaustion.",
            "source": {
                "discovery": "UNKNOWN"
            },
            "affected": [
                {
                    "vendor": "Apache Software Foundation",
                    "product": "Apache CXF",
                    "packageURL": "pkg:maven/org.apache.cxf/cxf-core",
                    "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"
                        }
                    ],
                    "defaultStatus": "unaffected",
                    "collectionURL": "https://repo.maven.apache.org/maven2",
                    "packageName": "org.apache.cxf:cxf-core"
                }
            ],
            "descriptions": [
                {
                    "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. \nUsers are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.",
                    "lang": "en",
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                            "value": "In Apache CXF, the parser for multipart/MTOM attachment part headers did not fully enforce the configured <code>attachment-max-header-size</code> (default 300 characters) and <code>attachment-headers-max-count</code> (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.&nbsp;<br>Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue."
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://lists.apache.org/thread.html/x9twtpv3d04qj83t6w9xkh9y2q28zztj",
                    "tags": [
                        "vendor-advisory"
                    ]
                }
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            "metrics": [
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                    "other": {
                        "type": "Textual description of severity",
                        "content": {
                            "text": "low"
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                    },
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                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "This issue was found using Claude agents to study the security of open-source projects and independently by Mike Read (github.com/Michael-JRead)",
                    "type": "finder"
                }
            ],
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        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2026/10/09/12"
                    }
                ],
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2026-10-09T11:07:52.472Z"
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            {
                "problemTypes": [
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                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-770",
                                "lang": "en",
                                "description": "CWE-770 Allocation of Resources Without Limits or Throttling"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "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"
                        }
                    },
                    {
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-15T17:45:18.146774Z",
                                "id": "CVE-2026-107937",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
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                                        "Automatable": "yes"
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                                        "Technical Impact": "partial"
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                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-15T17:45:25.955Z"
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