The Apache XmlSchema walker (xmlschema-walker) doesn't detect cycles in type derivation, substitution groups, model groups or attribute groups. A malicious schema with such a cycle can make the walker recurse until the stack overflows, causing a denial of service. Users are recommended to upgrade to version 2.3.3, which fixes this issue.
History

Tue, 06 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:apache:xmlschema:*:*:*:*:*:*:*:*

Wed, 30 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache xmlschema
Vendors & Products Apache
Apache xmlschema

Wed, 30 Sep 2026 05:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Tue, 29 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 29 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
CWE-674

Tue, 29 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
Description The Apache XmlSchema walker (xmlschema-walker) doesn't detect cycles in type derivation, substitution groups, model groups or attribute groups. A malicious schema with such a cycle can make the walker recurse until the stack overflows, causing a denial of service. Users are recommended to upgrade to version 2.3.3, which fixes this issue.
Title Apache XMLSchema: Denial of service through cyclic schema definitions in the schema walker
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published: 2026-09-29T11:34:17.292Z

Updated: 2026-09-29T20:13:56.826Z

Reserved: 2026-09-29T10:42:55.336Z

Link: CVE-2026-102497

cve-icon Vulnrichment

Updated: 2026-09-29T12:11:28.071Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-29T12:17:09.837

Modified: 2026-10-06T14:37:44.453

Link: CVE-2026-102497

cve-icon Redhat

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