CVE-2026-33745 cpp-httplib Client Leaks Authentication Credentials to Untrusted Hosts on Cross-Origin HTTP Redirect

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.39.0, the cpp-httplib HTTP client forwards stored Basic Auth, Bearer Token, and Digest Auth credentials to arbitrary hosts when following cross-origin HTTP redirects 301/302/307/308. A malicious or...

CVE-2026-33745 cpp-httplib Client Leaks Authentication Credentials to Untrusted Hosts on Cross-Origin HTTP Redirect

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.39.0, the cpp-httplib HTTP client forwards stored Basic Auth, Bearer Token, and Digest Auth credentials to arbitrary hosts when following cross-origin HTTP redirects 301/302/307/308. A malicious or...

CVE-2026-33745

The CVE affects cpp-httplib (a C++11 single-file header-only HTTP/HTTPS library). Before 0.39.0, the HTTP client forwards stored Basic Auth, Bearer Token, and Digest Auth credentials to arbitrary hosts when following cross-origin redirects (301/302/307/308). A malicious or compromised server can ...

CVE-2026-33745 cpp-httplib Client Leaks Authentication Credentials to Untrusted Hosts on Cross-Origin HTTP Redirect

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.39.0, the cpp-httplib HTTP client forwards stored Basic Auth, Bearer Token, and Digest Auth credentials to arbitrary hosts when following cross-origin HTTP redirects 301/302/307/308. A malicious or...

CVE-2026-33745

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.39.0, the cpp-httplib HTTP client forwards stored Basic Auth, Bearer Token, and Digest Auth credentials to arbitrary hosts when following cross-origin HTTP redirects 301/302/307/308. A malicious or...

CVE-2026-33745: Exposure of Sensitive Information to an Unauthorized Actor

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.39.0, the cpp-httplib HTTP client forwards stored Basic Auth, Bearer Token, and Digest Auth credentials to arbitrary hosts when following cross-origin HTTP redirects 301/302/307/308. A malicious or...

cpp-httplib 信息泄露漏洞

cpp-httplib is a C++ library developed by Yhirose, which includes HTTP/HTTPS server and client components. Versions of cpp-httplib prior to 0.39.0 contained an information leakage vulnerability. This vulnerability stemmed from the HTTP client forwarding stored credentials when following...

PT-2026-28524

Name of the Vulnerable Software and Affected Versions cpp-httplib versions prior to 0.39.0 Description The cpp-httplib HTTP client improperly handles cross-origin HTTP redirects 301, 302, 307, 308. Specifically, it forwards stored Basic Auth, Bearer Token, and Digest Auth credentials to arbitrary...

[SECURITY] Fedora 42 Update: cpp-httplib-0.37.1-2.fc42

A C++11 single-file header-only cross platform HTTP/HTTPS library. It's extremely easy to setup. Just include the httplib.h file in your code!...

Fedora 42 : cpp-httplib (2026-6ed9c65eaf)

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-6ed9c65eaf advisory. Update to 0.37.1 rbhz2445943 - Fixes Denial of Service via malformed Content-Length header CVE-2026-31870 - Reenables 32-bit build Update to 0.37.0...

Fedora 43 : cpp-httplib (2026-c2049f7220)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-c2049f7220 advisory. Update to 0.37.0 rhbz2441656 - Fixes Denial of Service via crafted HTTP POST request CVE-2026-29076, rhbz2445663 Update to 0.35.0 - Payload size lim...

Fedora 44 : cpp-httplib (2026-2c2afa9f9e)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-2c2afa9f9e advisory. Update to 0.37.1 - Fixes Denial of Service via malformed Content-Length header CVE-2026-31870 - Reenable 32b builds Update to 0.37.0 rhbz2441656 -...

SUSE CVE-2026-32627

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.2, when a cpp-httplib client is configured with a proxy and setfollowlocationtrue, any HTTPS redirect it follows will have TLS certificate and hostname verification silently disabled on the new...

Fedora 45 : cpp-httplib (2026-06d1b46d1e)

The remote Fedora 45 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-06d1b46d1e advisory. Automatic update for cpp-httplib-0.38.0-1.fc45. Changelog Tue Mar 17 2026 Petr Menk - 0.38.0-1 - Update to 0.38.0 rhbz2447261 Tue Mar 17 2026 Petr Menk -...

DEBIAN-CVE-2026-32627

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.2, when a cpp-httplib client is configured with a proxy and setfollowlocationtrue, any HTTPS redirect it follows will have TLS certificate and hostname verification silently disabled on the new...

CVE-2026-32627

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.2, when a cpp-httplib client is configured with a proxy and setfollowlocationtrue, any HTTPS redirect it follows will have TLS certificate and hostname verification silently disabled on the new...

CVE-2026-32627: Improper Certificate Validation

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.2, when a cpp-httplib client is configured with a proxy and setfollowlocationtrue, any HTTPS redirect it follows will have TLS certificate and hostname verification silently disabled on the new...

OESA-2026-1554 cpp-httplib security update

A C++11 single-file header-only cross platform HTTP/HTTPS library. It's extremely easy to setup. Just include httplib.h file in your code! Security Fixes: cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, when a request handler throws a C++ excepti...

OESA-2026-1553 cpp-httplib security update

A C++11 single-file header-only cross platform HTTP/HTTPS library. It's extremely easy to setup. Just include httplib.h file in your code! Security Fixes: cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, when a request handler throws a C++ excepti...

Linux Distros Unpatched Vulnerability : CVE-2026-32627

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.2, when a cpp-httplib client is configured with a proxy and...