The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

An issue found in NginxProxyManager v.2.9.19 allows an attacker to execute arbitrary code via a lua script to the configuration file.

jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list, the backend builds an htpasswd file with crafted username and/or password input that is concatenated without any validation, and is directly passed to the exec command, potentially allowing an authenticated attacker to execute arbitrary commands on the system. NOTE: this is not part of any NGINX software shipped by F5.

jc21.com Nginx Proxy Manager before 2.9.17 allows XSS during item deletion.

jc21 Nginx Proxy Manager before 2.0.13 allows %2e%2e%2f directory traversal.