Apache Neethi: Uncontrolled recursion while parsing crafted WS-Policy documents allows denial of service (CVE-2026-91863) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-91863

Apache Neethi: Uncontrolled recursion while parsing crafted WS-Policy documents allows denial of service

Answer in brief

CVE-2026-91863 records a Unknown severity vulnerability in Apache Neethi: Uncontrolled recursion while parsing crafted WS-Policy documents allows denial of service. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/Apache Neethi (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 21, 2026Updated Sep 21, 2026Source checked Sep 21, 2026First seen by HOL Sep 21, 2026Material review Sep 21, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/Apache Neethi (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Apache Software Foundation/Apache Neethigeneric	>=0 <3.2.4	3.2.4

Recommended response

Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/Apache Neethi.
Review the reported fix. Update Apache Software Foundation/Apache Neethi to 3.2.4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 21, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.