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.
Metrics
Affected Vendors & Products
References
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
|
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 |
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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
Updated: 2026-09-29T12:11:28.071Z
Status : Analyzed
Published: 2026-09-29T12:17:09.837
Modified: 2026-10-06T14:37:44.453
Link: CVE-2026-102497
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