CVE-2026-42402: high-severity vulnerability in Apache Neethi
Apache Neethi: Policy Normalization Unbounded Resource Allocation DoS
Published
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.7%
Apache Neethi is vulnerable to a Denial of Service attack through algorithmic complexity in policy normalization. Specially crafted WS-Policy documents can trigger an exponential Cartesian cross-product expansion during the normalization process, causing unbounded memory allocation that exhausts the JVM heap. This occurs when the normalization process generates an excessive number of policy alternatives without bounds, leading to runtime memory exhaustion.
Users should upgrade to 3.2.2 which limits the maximum number of normalized policy alternatives.
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-2026-42403HIGHApache Neethi: Circular Policy Reference Infinite LoopEPSS 0.8%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%