{"id":"CVE-2026-102497","title":"The Apache XmlSchema walker (xmlschema-walker) doesn't detect cycles in type derivation, substitution groups, model groups or attribute groups","summary":"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, c…","severity":"none","vendor":"Apache Software Foundation","product":"org.apache.ws.xmlschema:xmlschema-walker","affected":["org.apache.ws.xmlschema:xmlschema-walker < 2.3.3"],"published":"2026-09-29","updated":"2026-09-29","sourceUpdated":"2026-09-29T13:17:50.827","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102497","references":[{"url":"https://lists.apache.org/thread/1cj02tobjyhjqq723bvg78yxkqt1lk7k","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/29/17","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-29T12:33:37.292Z","slug":"CVE-2026-102497","body":"## Overview\n\nThe 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}