CVE-2026-102496 — Apache XMLSchema: Denial of service through deeply nested schema structures

CVE-2026-102496

Apache XMLSchema: Denial of service through deeply nested schema structures PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache XMLSchema	affected 0 before 2.3.3

CWE

No CWE identifiers supplied.

References

https://lists.apache.org/thread/9z1vg8wmvwpfw748fb2nb55w4hgbnxol

ADP enrichment

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/09/29/16

CISA-ADP

No English description supplied.

No references supplied.