Advisory severityHigh7.5Apache Software Foundation

High [CVE-2026-102497] The Apache XmlSchema walker (xmlschema-walker) doesn't detect cycles in type derivation, substitution groups, model groups or attribute groups

This high-severity Apache Software Foundation advisory covers CVE-2026-102497; related products: Apache XmlSchema.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-102497 Source published Sep 29, 2026Source updated Sep 29, 2026

VulniPulse record published Sep 29, 2026Record updated Sep 29, 2026

CVE-2026-102497

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Summary

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

Apache XMLSchema before 2.3.3

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Fixed versions

2.3.3

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 2.3.3, which fixes this issue.

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Sources

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Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-102497 instead of the raw feed document.
CVE Program

Cross-references

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CVE-2026-102497NVD CVE.org MITRE

Official resources

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Apache project downloads (fixed releases)
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