← Back

CVE-2025-66577

nvd nist
Published: Dec 5, 2025Modified: Jun 17, 2026

JSON object

Loading...
5.3
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Exploitability: 3.9 / Impact: 1.4
Source: security-advisories@github.com (Secondary)

Description

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.

Affected (1)

Products: Yhirose: Cpp Httplib
1 product
Cpp Httplib
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Before 0.27.0

References (2)

Timeline

No history available yet.