CVE-2020-1745: Red Hat Undertow

Critical severity, CVSS 9.8. EPSS: 5% chance of exploitation in the next 30 days.

A file inclusion vulnerability was found in the AJP connector enabled with a default AJP configuration port of 8009 in Undertow version 2.0.29.Final and before and was fixed in 2.0.30.Final. A remote, unauthenticated attacker could exploit this vulnerability to read web application files from a vulnerable server. In instances where the vulnerable server allows file uploads, an attacker could upload malicious JavaServer Pages (JSP) code within a variety of file types and trigger this vulnerability to gain remote code execution.

Affected products

• Red Hat Undertow: up to and including 2.0.29

Published 2020-04-28. Last modified 2026-06-17.