CVE-2026-102497

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/1cj02tobjyhjqq723bvg78yxkqt1lk7k	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/09/29/17	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:xmlschema:*:*:*:*:*:*:*:*

History

06 Oct 2026, 14:37

Type	Values Removed	Values Added
References	~~() https://lists.apache.org/thread/1cj02tobjyhjqq723bvg78yxkqt1lk7k -~~	() https://lists.apache.org/thread/1cj02tobjyhjqq723bvg78yxkqt1lk7k - Mailing List, Vendor Advisory
References	~~() http://www.openwall.com/lists/oss-security/2026/09/29/17 -~~	() http://www.openwall.com/lists/oss-security/2026/09/29/17 - Mailing List, Third Party Advisory
First Time		Apache Apache xmlschema
CPE		cpe:2.3:a:apache:xmlschema::::::::

29 Sep 2026, 21:17

Type	Values Removed	Values Added
CWE		CWE-674
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

29 Sep 2026, 13:17

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/09/29/17 -

29 Sep 2026, 12:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-29 12:17

Updated : 2026-10-06 14:37

NVD link : CVE-2026-102497

Mitre link : CVE-2026-102497

CVE.ORG link : CVE-2026-102497

JSON object : View

Products Affected

apache

xmlschema

CWE

CWE-674

Uncontrolled Recursion

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