[ CVE-2026-102497 · Published 29 Sep 2026 ]

Vulnerability in Apache Software Foundation Apache XMLSchema

CVSS 7.5 EPSS <1%No fix listed yet

[ Description ]Official 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. Users are recommended to upgrade to version 2.3.3, which fixes this issue.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

lists.apache.org/thread/1cj02tobjyhjqq723bvg78yxkqt1lk7kMailing ListVendor Advisory
www.openwall.com/lists/oss-security/2026/09/29/17Mailing ListThird Party Advisory