CVE-2026-66142: Apache Neethi: Uncontrolled recursion in policy processing

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-24 · updated 2026-10-24
Weakness: CWE-400

Description

Apache Neethi is vulnerable to uncontrolled recursion when parsing policies that lack policy Ids or with deeply nested structures, which may lead to a denial of service attack when parsing policies due to runtime memory exhaustion. Users are recommended to upgrade to version 3.2.3, which fixes this issue.

Affected products

Apache Software Foundation Apache Neethi: before 3.2.3 — fixed in 3.2.3

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Neethi 3.2.3. Check the vendor advisory for mitigations.

References

https://lists.apache.org/thread/fomwtwt4pzzhxn4fyn3skykto913vfzt
http://www.openwall.com/lists/oss-security/2026/07/24/8

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