Bug 2543086 (CVE-2026-102496) - CVE-2026-102496 org.apache.ws.xmlschema/xmlschema-core: Apache XMLSchema: Denial of Service (DoS) via deeply nested schema structures
Summary: CVE-2026-102496 org.apache.ws.xmlschema/xmlschema-core: Apache XMLSchema: Den...
Keywords:
Status: NEW
Alias: CVE-2026-102496
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-29 11:54 UTC by OSIDB Bzimport
Modified: 2026-10-15 23:26 UTC (History)
39 users (show)

Fixed In Version:
Clone Of:
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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:83670 0 None None None 2026-10-15 23:26:05 UTC

Description OSIDB Bzimport 2026-09-29 11:54:17 UTC 
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.
Comment 1 Jon Orris 2026-10-15 23:26:02 UTC 
This issue has been addressed in the following products:

  Red Hat Build of Apache Camel 4.18 for Quarkus 3.33

Via RHSA-2026:83670 https://access.redhat.com/errata/RHSA-2026:83670
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