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.
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 04:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119

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

Type Values Removed Values Added
Weaknesses CWE-770
References
Metrics threat_severity

None

threat_severity

Important


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 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119
CWE-674

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

Type Values Removed Values Added
Description 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.
Title Apache XMLSchema: Denial of service through deeply nested schema structures
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published: 2026-09-29T11:34:04.111Z

Updated: 2026-09-29T20:12:07.164Z

Reserved: 2026-09-29T10:39:29.739Z

Link: CVE-2026-102496

cve-icon Vulnrichment

Updated: 2026-09-29T12:11:26.753Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-29T12:17:09.727

Modified: 2026-10-06T14:38:42.693

Link: CVE-2026-102496

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-29T11:34:04Z

Links: CVE-2026-102496 - Bugzilla