CVE-2025-66577

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.27.0, a vulnerability allows attacker-controlled HTTP headers to influence server-visible metadata, logging, and authorization decisions. An attacker can supply X-Forwarded-For or X-Real-IP headers which get accepted unconditionally by get_client_ip() in docker/main.cc, causing access and error logs (nginx_access_logger / nginx_error_logger) to record spoofed client IPs (log poisoning / audit evasion). This vulnerability is fixed in 0.27.0.

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.27.0, a vulnerability allows attacker-controlled HTTP headers to influence server-visible metadata, logging, and authorization decisions. An attacker can supply X-Forwarded-For or X-Real-IP headers which get accepted unconditionally by get_client_ip() in docker/main.cc, causing access and error logs (nginx_access_logger / nginx_error_logger) to record spoofed client IPs (log poisoning / audit evasion). This vulnerability is fixed in 0.27.0.

cpp-httplib es una biblioteca C++11 multiplataforma de un solo archivo de cabecera HTTP/HTTPS. En versiones anteriores a 0.27.0, una vulnerabilidad permite que encabezados HTTP controlados por el atacante influyan en los metadatos visibles para el servidor, el registro y las decisiones de autorización. Un atacante puede proporcionar encabezados X-Forwarded-For o X-Real-IP que son aceptados incondicionalmente por get_client_ip() en docker/main.cc, lo que provoca que los registros de acceso y error (nginx_access_logger / nginx_error_logger) registren IPs de cliente falsificadas (envenenamiento de registros / evasión de auditoría). Esta vulnerabilidad está corregida en 0.27.0.