CVE-2026-42934

Name of the Vulnerable Software and Affected Versions NGINX Plus (affected versions not specified) NGINX Open Source (affected versions not specified)

Description A heap buffer over-read exists in the ngx http charset module module. This occurs when the charset, source charset, charset map, and proxy pass directives are configured, specifically with buffering disabled ("off"). Unauthenticated attackers can send requests that, under certain conditions, cause the NGINX worker process to read beyond the allocated heap buffer, potentially leading to a process restart or limited disclosure of memory.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.