CVEvulnerability

CVE-2025-66577

5.3 MEDIUM Published 2025-12-05 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2025-12-05
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-117, CWE-807

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 configurations

• yhirose cpp-httplib (< 0.27.0)

Related

Weakness · CWE (2)

  • CWE-117 Improper Output Neutralization for Logs weakness
  • CWE-807 Reliance on Untrusted Inputs in a Security Decision weakness

References