CVE-2026-34441

Name of the Vulnerable Software and Affected Versions cpp-httplib versions prior to 0.40.0

Description cpp-httplib is vulnerable to HTTP Request Smuggling. The server's static file handler serves GET responses without consuming the request body. On HTTP/1.1 keep-alive connections, the unread body bytes remain on the TCP stream and are interpreted as the start of a new HTTP request. An attacker can embed an arbitrary HTTP request inside the body of a GET request, which the server processes as a separate request.

Recommendations Update cpp-httplib to version 0.40.0 or later.