CVE-2026-102496

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.

Score

CVSS 3.1 7.5 High

Status

Analyzed - security@apache.org

Published

2026-09-29

Last modified

2026-10-06

Weaknesses

CWE-674

Affected products

• Xmlschema (Apache)
• Apache Xmlschema (Apache Software Foundation)

References

• https://lists.apache.org/thread/9z1vg8wmvwpfw748fb2nb55w4hgbnxol
• http://www.openwall.com/lists/oss-security/2026/09/29/16