{"id":"CVE-2026-102497","revision":null,"records":[{"revision":"1801917b2fbc447fb8184731d7eb5d73","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-102497","aliases":[],"title":"Apache XMLSchema: Denial of service through cyclic schema definitions in the schema walker","description":"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.","state":0,"publishedAt":"2026-09-29T11:34:17.292+00:00","modifiedAt":"2026-09-29T20:13:56.826+00:00","affected":[{"ecosystem":"https://repo.maven.apache.org/maven2","name":"org.apache.ws.xmlschema:xmlschema-walker","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Apache Software Foundation\",\n                    \"product\": \"Apache XMLSchema\",\n                    \"packageURL\": \"pkg:maven/org.apache.ws.xmlschema/xmlschema-walker\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.3.3\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"collectionURL\": \"https://repo.maven.apache.org/maven2\",\n                    \"packageName\": \"org.apache.ws.xmlschema:xmlschema-walker\"\n                }"}],"metrics":[],"references":["https://lists.apache.org/thread/1cj02tobjyhjqq723bvg78yxkqt1lk7k"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102497","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-102497","identifiers":["CVE-2026-102497"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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