Resource exhaustion in Apache Neethi - CVE-2026-66143
Published: August 24, 2026
Vulnerability identifier: #VU144745
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-66143
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper resource management in policy normalization when processing crafted policies. A remote attacker can supply a specially crafted policy to cause a denial of service.
The issue arises because the maximum number of normalized policy alternatives can be bypassed across policy computation paths.
Affected software
Apache Neethi
IBM App Connect Enterprise
IBM App Connect Enterprise
How to mitigate CVE-2026-66143
Install security update from vendor's website.
Apache Neethi - update to 3.2.3
IBM App Connect Enterprise - update to 13.0.8.2
IBM App Connect Enterprise - update to 13.0.8.2