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Posted to dev@ws.apache.org by Colm O hEigeartaigh <co...@apache.org> on 2026/09/29 11:02:58 UTC

CVE-2026-102495: Apache XMLSchema: Denial of service through unbounded recursion when resolving schema imports and includes

Severity: low 

Affected versions:

- Apache XMLSchema before 2.3.3

Description:

Apache XmlSchema doesn't limit how deeply schema imports and includes can be nested, 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.

Credit:

This issue was found using Claude agents to study the security of open-source projects (finder)

References:

https://ws.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-102495


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