CVE-2026-91866

Apache Neethi: Crafted policies cause unbounded work during intersection leading to denial of service

Published Sep 21, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A specially crafted pair of WS-Policy documents can force Neethi's policy-intersection to do exponential amounts of work, pinning the CPU for a long time (denial of service).
Users are recommended to upgrade to version 3.2.4, which fixes this issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:neethi:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Weaknesses CWE-400
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache neethi
Vendors & Products Apache
Apache neethi
References
Type Values Removed Values Added
Weaknesses CWE-400
CWE-770
Type Values Removed Values Added
Description A specially crafted pair of WS-Policy documents can force Neethi's policy-intersection to do exponential amounts of work, pinning the CPU for a long time (denial of service). Users are recommended to upgrade to version 3.2.4, which fixes this issue.
Title Apache Neethi: Crafted policies cause unbounded work during intersection leading to denial of service
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Sep 21, 2026, 1:17 PM
Reserved
Sep 15, 2026, 9:57 AM
Status
Analyzed
Published
Sep 21, 2026, 12:17 PM
Modified
Sep 25, 2026, 1:09 PM
Severity
Important
Public date
Sep 21, 2026, 11:27 AM