{"id":"CVE-2026-102497","summary":"Apache XMLSchema: Denial of service through cyclic schema definitions in the schema walker","details":"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.","modified":"2026-10-08T02:49:43.267938815Z","published":"2026-09-29T11:34:17.292Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"fixed":"2.3.3"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"apache","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102497.json"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/09/29/17"},{"type":"WEB","url":"https://repo.maven.apache.org/maven2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102497.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/1cj02tobjyhjqq723bvg78yxkqt1lk7k"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102497"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/ws-xmlschema","events":[{"introduced":"0"},{"fixed":"abc808eeb7190776f19132c7947f9c8c8570627c"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:apache:xmlschema:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.3.3"}]}}],"versions":["xmlschema-2.3.2","xmlschema-2.3.1","xmlschema-2.3.0","xmlschema-2.2.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102497.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}