{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102497", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-09-29T10:42:55.336Z", "datePublished": "2026-09-29T11:34:17.292Z", "dateUpdated": "2026-09-29T20:13:56.826Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-09-29T11:34:17.292Z"}, "title": "Apache XMLSchema: Denial of service through cyclic schema definitions in the schema walker", "source": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache XMLSchema", "packageURL": "pkg:maven/org.apache.ws.xmlschema/xmlschema-walker", "versions": [{"status": "affected", "version": "0", "lessThan": "2.3.3", "versionType": "semver"}], "defaultStatus": "unaffected", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.ws.xmlschema:xmlschema-walker"}], "descriptions": [{"value": "The Apache XmlSchema walker (xmlschema-walker) doesn't detect cycles in type derivation, substitution groups, model groups or attribute groups. A malicious schema with such a cycle can make the walker recurse until the stack overflows, causing a denial of service.\n\nUsers are recommended to upgrade to version 2.3.3, which fixes this issue.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>The Apache XmlSchema walker (xmlschema-walker) doesn't detect cycles in type derivation, substitution groups, model groups or attribute groups. A malicious schema with such a cycle can make the walker recurse until the stack overflows, causing a denial of service.<br><br>Users are recommended to upgrade to version 2.3.3, which fixes this issue.</p>"}]}], "references": [{"url": "https://lists.apache.org/thread/1cj02tobjyhjqq723bvg78yxkqt1lk7k", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "low"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "credits": [{"lang": "en", "value": "This issue was found using Claude agents to study the security of open-source projects", "type": "finder"}], "x_generator": {"engine": "Vulnogram 1.0.3"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/09/29/17"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-09-29T12:11:28.071Z"}}, {"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-674", "lang": "en", "description": "CWE-674 Uncontrolled Recursion"}]}], "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"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-09-29T20:13:25.311609Z", "id": "CVE-2026-102497", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-29T20:13:56.826Z"}}]}}

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{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.ws.xmlschema:xmlschema-walker", "packageURL": "pkg:maven/org.apache.ws.xmlschema/xmlschema-walker", "product": "Apache XMLSchema", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "2.3.3", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Apache XmlSchema walker (xmlschema-walker) doesn't detect cycles in type derivation, substitution groups, model groups or attribute groups. A malicious schema with such a cycle can make the walker recurse until the stack overflows, causing a denial of service.\n\nUsers are recommended to upgrade to version 2.3.3, which fixes this issue."}], "id": "CVE-2026-102497", "lastModified": "2026-09-29T15:53:48.653", "metrics": {}, "published": "2026-09-29T12:17:09.837", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread/1cj02tobjyhjqq723bvg78yxkqt1lk7k"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/09/29/17"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Awaiting Analysis"}

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{"created": "2026-09-29T17:30:17.411857+00:00", "updated": "2026-09-29T17:30:17.411862+00:00", "vendors": [], "weaknesses": ["CWE-674", "CWE-400"]}