CVE-2026-91863: Vulnerability in Apache Software Foundation Apache Neethi
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.
AI Analysis
Technical Summary
CVE-2026-91863 is a denial of service vulnerability in Apache Neethi caused by a specially crafted WS-Policy document that contains deeply nested policy elements. This bypasses Neethi's nesting-depth limit and exhausts the thread stack, crashing the parser. The vulnerability affects versions from 0 up to but not including 3.2.4. Upgrading to version 3.2.4 mitigates this issue.
Potential Impact
An attacker can cause a denial of service by crashing the Apache Neethi parser through a crafted WS-Policy document that exhausts the thread stack. This disrupts normal processing of WS-Policy documents and can impact availability of services relying on Neethi for policy parsing.
Mitigation Recommendations
Users should upgrade Apache Neethi to version 3.2.4 or later, where this vulnerability is fixed. No other mitigation is indicated by the vendor advisory.
CVE-2026-91863: Vulnerability in Apache Software Foundation Apache Neethi
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.
CVSS v3.1
Score 7.5high
Affected software
Apache Software Foundation
Apache Neethi
pkg:maven/Apache Software Foundation/org.apache.neethi:neethiRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-91863 is a denial of service vulnerability in Apache Neethi caused by a specially crafted WS-Policy document that contains deeply nested policy elements. This bypasses Neethi's nesting-depth limit and exhausts the thread stack, crashing the parser. The vulnerability affects versions from 0 up to but not including 3.2.4. Upgrading to version 3.2.4 mitigates this issue.
Potential Impact
An attacker can cause a denial of service by crashing the Apache Neethi parser through a crafted WS-Policy document that exhausts the thread stack. This disrupts normal processing of WS-Policy documents and can impact availability of services relying on Neethi for policy parsing.
Mitigation Recommendations
Users should upgrade Apache Neethi to version 3.2.4 or later, where this vulnerability is fixed. No other mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-09-15T09:50:54.325Z
- State
- PUBLISHED
Threat ID: 6ab123cc55bf5e2cf5dff86c
Added to database: 09/21/2026, 12:32:12 UTC
Last enriched: 09/21/2026, 12:46:53 UTC
Last updated: 09/21/2026, 22:47:06 UTC
Views: 13
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