[ CVE-2026-102496 · Published 29 Sep 2026 ]

Vulnerability in Apache Software Foundation Apache XMLSchema

CVSS 7.5 EPSS <1%No fix listed yet

[ Description ]Official description

Apache XmlSchema doesn't limit how deeply schema structures can be nested when it builds its schema model, so a malicious schema can make parsing recurse until the stack overflows. This causes 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/9z1vg8wmvwpfw748fb2nb55w4hgbnxolMailing ListVendor Advisory
www.openwall.com/lists/oss-security/2026/09/29/16Mailing ListThird Party Advisory