CVE-2026-102496

EUVD-2026-88738
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 45.27%
Affected Products (NVD)
VendorProductVersion
apachexmlschema
𝑥
< 2.3.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://lists.apache.org/thread/9z1vg8wmvwpfw748fb2nb55w4hgbnxol
http://www.openwall.com/lists/oss-security/2026/09/29/16