CVE-2026-45372
yhirose cpp-httplib 취약점
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, when cpp-httplib's server parses an incoming request, it applies percent-decoding to every header value except Location and Referer. The validity check (is_field_value) is run before decoding, so encoded %0D%0A passes the check and is then expanded to a literal \r\n byte pair inside the stored header value. This vulnerability is fixed in 0.44.0.
- 대응 우선순위
- 점검
- CVSS
- 9.9
- EPSS
- 0.29% 백분위 21.7% · 2026.08.04 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.05.30