Advisory severityHigh7.5Apache Software Foundation

High [CVE-2026-91863] specially crafted WS-Policy document with deeply nested policy elements can bypass Neethi's nesting-depth limit and exhaust the thread stack, crashing the parser (denial of service)

This high-severity Apache Software Foundation advisory covers CVE-2026-91863; related products: Apache Neethi.

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

CVE-2026-91863 Source published Sep 21, 2026Source updated Sep 24, 2026

VulniPulse record published Sep 21, 2026Record updated Sep 24, 2026

CVE-2026-91863

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Summary

A specially crafted WS-Policy document with deeply nested policy elements can bypass Neethi's nesting-depth limit and exhaust the thread stack, crashing the parser (denial of service). Users are recommended to upgrade to version 3.2.4, which fixes this issue.

Affected product named by the advisory: Apache Neethi.

Affected versions

Apache Neethi before 3.2.4

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

Fixed versions

3.2.4

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

A specially crafted WS-Policy document with deeply nested policy elements can bypass Neethi's nesting-depth limit and exhaust the thread stack, crashing the parser (denial of service).
Users are recommended to upgrade to version 3.2.4, which fixes this issue.

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
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-2026-91863 instead of the raw feed document.
CVE Program

Cross-references

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CVE-2026-91863NVD CVE.org MITRE

Official resources

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Official documentation
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Apache project downloads (fixed releases)
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