CVE-2026-91864: high-severity vulnerability in Apache Neethi
Apache Neethi: Crafted WS-Policy documents bypass element/attribute limits causing memory exhaustion
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 0.7%
A specially crafted WS-Policy document can pack unlimited content inside a policy assertion, which Neethi copies into memory without counting it against its size limits, exhausting the heap (denial of service).
Users are recommended to upgrade to version 3.2.4, 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-2026-42403HIGHApache 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-2026-66144HIGHApache Neethi: Remote PolicyReference fetch lacks resource boundsEPSS 0.7%