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Message-ID: <7ad8e6fc-8e69-efbb-81af-70fdca05abac@apache.org>
Date: Tue, 29 Sep 2026 11:03:17 +0000
From: Colm O hEigeartaigh <coheigea@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-102496: Apache XMLSchema: Denial of service through
deeply nested schema structures
Severity: low
Affected versions:
- Apache XMLSchema before 2.3.3
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.
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-2026-102496
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