CVE-2026-66143 Apache Neethi: Missing global alternative-output budget across policy computation paths
Attackers can cause denial of service via resource consumption by bypassing policy alternative limits in Apache Neethi.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-66143?
CVE-2026-66143 is a high-severity denial of service vulnerability in Apache Neethi, published on 24 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
It is possible to bypass the maximum number of normalized policy alternatives that was introduced in Apache Neethi 3.2.2 via certain crafted policies, which may lead to a denial of service attack via resource consumption. Users are recommended to upgrade to version 3.2.3, which fixes this issue.
Weakness: CWE-400
Which versions are affected by CVE-2026-66143?
It affects 1 product.
Products include Apache Neethi.
How do I fix CVE-2026-66143?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-66143 being exploited?
There is no known exploitation of CVE-2026-66143 in the wild and no public exploit code.
Other vulnerabilities in Apache Neethi
- CVE-2026-91863 Apache Neethi: Uncontrolled recursion while parsing crafted WS-Policy documents allows denial of service
- CVE-2026-91864 Apache Neethi: Crafted WS-Policy documents bypass element/attribute limits causing memory exhaustion
- CVE-2026-91865 Apache Neethi: Crafted policy references cause exponential expansion during normalization leading to denial of service
- CVE-2026-91866 Apache Neethi: Crafted policies cause unbounded work during intersection leading to denial of service
- CVE-2026-66142 Apache Neethi: Uncontrolled recursion in policy processing
Sources
Also known as CLEANSTART-2026-CC87108, GHSA-ghwq-2rg5-c7j8.