CVE-2026-42403

Apache Neethi: Circular Policy Reference Infinite Loop

Published: May 1, 2026Updated: May 1, 2026 Sources: CVE List NVDCWE-400

7.5HIGH

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-400

Affected Products

Apache Software Foundation

oss-project·USaka apache foundation

Apache NeethiOn-premLibrary

OSS Libraries / web-framework

apache

oss-project·USaka apache http server, apache httpd

neethiOn-premLibrary

OSS Libraries / generic-library

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

https://lists.apache.org/thread/zm6t8skkkskjwk1881l4m4n0l7dqclzo

lists.apache.org

http://www.openwall.com/lists/oss-security/2026/05/01/7

openwall.com

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