CVE-2026-45372

Description

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.

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Produits concernés

• yhirose cpp-httplib

Scores CVSS

Faiblesses (CWE)

• CWE-93
• CWE-444

Références

• https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-xjxg-64p4-vj4m ExploitMitigationVendor Advisory
• https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-xjxg-64p4-vj4m ExploitMitigationVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories