CVE-2026-91866

HIGH CVSS 3.1: 7.5
Updated Sep 21, 2026
Apache Software Foundation
Parameter Value
CVSS 7.5 (HIGH)
Fixed In 3.2.4
Type CWE-770 (Allocation Without Limits)
Vendor Apache Software Foundation
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products

apache software foundation:apache neethi