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
| Link | Resource |
|---|---|
| https://github.com/yhirose/cpp-httplib/commit/ac9ebb0ee333ce8bf13523f487bdfad9518a2aff | Patch |
| https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-gfpf-r66f-5mh2 | Exploit Third Party Advisory |
Configurations
History
11 Dec 2025, 18:09
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/yhirose/cpp-httplib/commit/ac9ebb0ee333ce8bf13523f487bdfad9518a2aff - Patch | |
| References | () https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-gfpf-r66f-5mh2 - Exploit, Third Party Advisory | |
| First Time |
Yhirose cpp-httplib
Yhirose |
|
| CPE | cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:* |
05 Dec 2025, 19:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-12-05 19:15
Updated : 2025-12-11 18:09
NVD link : CVE-2025-66577
Mitre link : CVE-2025-66577
CVE.ORG link : CVE-2025-66577
JSON object : View
Products Affected
yhirose
- cpp-httplib