CVE-2025-66577 (GCVE-0-2025-66577)
Vulnerability from cvelistv5
Published
2025-12-05 18:20
Modified
2025-12-05 18:29
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-117 - Improper Output Neutralization for Logs
  • CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Summary
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.
References
Impacted products
Vendor Product Version
yhirose cpp-httplib Version: < 0.27.0
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