cpp-httplib is a C++ header-only HTTP/HTTPS library

Why it is Yellow

• CVSS 7.5 high
• Remotely exploitable without logging in

References

• https://github.com/yhirose/cpp-httplib/commit/0c1cc8c9866bb567ff11c1cd0d09779e8c5f8585
• https://github.com/yhirose/cpp-httplib/releases/tag/v0.51.0
• https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-22mf-w2v3-r2jv
• https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-22mf-w2v3-r2jv

Original description

cpp-httplib is a C++ header-only HTTP/HTTPS library. Prior to 0.51.0, create_redirect_client() removes Host, Proxy-Authorization, and Authorization headers when following a cross-origin 301, 302, 307, or 308 redirect but leaves Cookie headers attached. detail::redirect() copies the request for those redirect codes, so cookies supplied directly or through default_headers_ are sent to the redirect target. An attacker who controls a redirect response, or a network position for a non-HTTPS origin, can receive session cookies intended for the original origin. A 303 redirect is not affected because that path clears all request headers. This issue is fixed in version 0.51.0.