← CVE Intelligence

CVE-2025-66577

cpp-httplib Untrusted HTTP Header Handling: X-Forwarded-For/X-Real-IP Trust PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
yhirose / cpp-httplibaffected < 0.27.0

CWE

CWE-117, CWE-807

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.