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CVE-2026-42403

31
FAUCET Score

Apache Neethi does not properly detect circular references in policy definitions. When a WS-Policy document contains circular policy references (where Policy A references Policy B which references Policy A), the policy normalization process can enter an infinite loop or cause excessive recursion, leading to a stack overflow or application hang. An attacker can craft malicious policy documents with circular references to cause a Denial of Service condition Users are recommended to upgrade to version 3.2.2, which fixes this issue.

First published: May 1, 2026Last modified: May 1, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2.2CPE matchmatch criteria
cpe:2.3:a:apache:neethi:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.76%
Probability of exploitation in next 30 days
EPSS Percentile
51.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 27th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.apache.neethi:neethiFixed in: 3.2.2
apachevendor investigatingvia vendor_rss
View patch

Vendor Advisories (2)

apacheapache:www.mail-archive.com/[email protected]/msg11016.html

CVE-2026-42403: Apache Neethi: Circular Policy Reference Infinite Loop

May 1, 2026
mavenGHSA-2hfh-9h53-qc24high

Apache Neethi does not properly detect circular references in policy definitions.

May 1, 2026

References

openwall.com / lists/oss-security/2026/05/01/7
Mailing ListThird Party Advisory
lists.apache.org / thread/zm6t8skkkskjwk1881l4m4n0l7dqclzo
Mailing ListVendor Advisory