CVE-2026-91866CWE-770denial-of-service

CVE-2026-91866

High · published September 21, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
54.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00740 · 54.1th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-09-21T16:17Z
Affected products (1)
ProductVersionsFixed in
apache/neethi< 3.2.43.2.4
References (2)
https://lists.apache.org/thread/zbfxnomgvbmqchqjgc6lk5h0z76k3gh4 · [email protected]http://www.openwall.com/lists/oss-security/2026/09/18/13 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 23 SEP 03:49Z
    EPSS moved — → 0%
    epss
  • 21 SEP 11:27Z
    Apache Neethi: Crafted policies cause unbounded work during intersection leading to denial of service
    cvelistv5