CVE-2026-102496

HighCVSS 7.5/10Last modified Oct 6, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-674

Affected software

Vendor	Product	Versions
Apache Software Foundation	Apache XMLSchema	< 2.3.3

References

https://lists.apache.org/thread/9z1vg8wmvwpfw748fb2nb55w4hgbnxolMailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/09/29/16Mailing List, Third Party Advisory

Timeline

Published: Sep 29, 2026
Last modified: Oct 6, 2026
NVD status: Analyzed

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