CVE-2026-42403: high-severity vulnerability in Apache Neethi
Apache Neethi: Circular Policy Reference Infinite Loop
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.8%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Apache Software Foundation · Apache NeethiRelated CVEs — Apache Neethi
In the same product, most dangerous first.
CVE-2026-66143HIGHApache Neethi: Missing global alternative-output budget across policy computation pathsEPSS 0.9%CVE-2026-91863HIGHApache Neethi: Uncontrolled recursion while parsing crafted WS-Policy documents allows denial of serviceEPSS 0.8%CVE-2026-91866HIGHApache Neethi: Crafted policies cause unbounded work during intersection leading to denial of serviceEPSS 0.7%CVE-2026-91865HIGHApache Neethi: Crafted policy references cause exponential expansion during normalization leading to denial of serviceEPSS 0.7%CVE-2026-91864HIGHApache Neethi: Crafted WS-Policy documents bypass element/attribute limits causing memory exhaustionEPSS 0.7%CVE-2026-66144HIGHApache Neethi: Remote PolicyReference fetch lacks resource boundsEPSS 0.7%