Apache Software FoundationCVE-2026-102497
Apache XMLSchema: denial of service
High7.5CVE-2026-102497 · Published Sep 29, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Apache XMLSchema Product | < 2.3.3 | 2.3.3 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity from
- CISA (its enrichment of the CVE record)
- Weakness
- CWE-674
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