CVE-2026-91864: Apache Neethi

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Apache Neethi: before 3.2.4 (fixed in 3.2.4)

Published 2026-09-21. Last modified 2026-09-25.