| Package | Affected versions | Patched versions |
|---|---|---|
| xmlschema | < 2.3.3 | 2.3.3 |
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.
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