CVE-2026-29076 cpp-httplib: Stack Overflow Denial of Service (DoS) via std::regex in multipart filename parsing

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.37.0, cpp-httplib uses std::regex libstdc++ to parse RFC 5987 encoded filename values in multipart Content-Disposition headers. The regex engine in libstdc++ implements backtracking via deep...

CVE-2026-29076

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.37.0, cpp-httplib uses std::regex libstdc++ to parse RFC 5987 encoded filename values in multipart Content-Disposition headers. The regex engine in libstdc++ implements backtracking via deep...

cpp-httplib 安全漏洞

cpp-httplib is a C++ library developed by Yhirose, which includes servers and clients for HTTP/HTTPS protocols. Versions of cpp-httplib prior to 0.37.0 contained security vulnerabilities. These vulnerabilities stemmed from stack overflows that occurred when the std::regex library was used to pars...

PT-2026-23867

Name of the Vulnerable Software and Affected Versions cpp-httplib versions prior to 0.37.0 Description The software uses std::regex libstdc++ to parse RFC 5987 encoded filename values in multipart Content-Disposition headers. A crafted filename parameter can cause uncontrolled stack growth due to...

SUSE SLES16 Security Update : cpp-httplib (SUSE-SU-2026:20600-1)

The remote SUSE Linux SLES16 / SLESSAP16 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:20600-1 advisory. - CVE-2025-53629: header can allocate memory arbitrarily in the server, potentially leading to its exhaustion bsc1246471. -...

Linux Distros Unpatched Vulnerability : CVE-2026-28435

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 0.35.0, cpp- httplib httplib.h does not enforce...

openSUSE 16 Security Update : cpp-httplib (openSUSE-SU-2026:20295-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20295-1 advisory. - CVE-2025-53629: header can allocate memory arbitrarily in the server, potentially leading to its exhaustion bsc1246471. - CVE-2025-53628: HTTP...

Linux Distros Unpatched Vulnerability : CVE-2026-28434

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 0.35.0, when a request handler throws a C++ exception and the...

SUSE CVE-2026-28435

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib httplib.h does not enforce Server::setpayloadmaxlength on the decompressed request body when using HandlerWithContentReader streaming ContentReader with Content-Encoding: gzip or other...

DEBIAN-CVE-2026-28435

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib httplib.h does not enforce Server::setpayloadmaxlength on the decompressed request body when using HandlerWithContentReader streaming ContentReader with Content-Encoding: gzip or other...

CVE-2026-28434

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++ exception and the application has not registered a custom exception handler via setexceptionhandler, the library catches the exception and writes its message...

CVE-2026-28435

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib httplib.h does not enforce Server::setpayloadmaxlength on the decompressed request body when using HandlerWithContentReader streaming ContentReader with Content-Encoding: gzip or other...

CVE-2026-28434

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++ exception and the application has not registered a custom exception handler via setexceptionhandler, the library catches the exception and writes its message...

UBUNTU-CVE-2026-28434

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++ exception and the application has not registered a custom exception handler via setexceptionhandler, the library catches the exception and writes its message...

CVE-2026-28435

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib httplib.h does not enforce Server::setpayloadmaxlength on the decompressed request body when using HandlerWithContentReader streaming ContentReader with Content-Encoding: gzip or other...

CVE-2026-28435

CVE-2026-28435 affects the cpp-httplib single-file header-only library. Before 0.35.0, the library does not enforce a payload max length on decompressed request bodies when using HandlerWithContentReader with Content-Encoding: gzip (or other encodings). A small compressed payload can expand beyon...

CVE-2026-28435 Payload size limit bypass via gzip decompression in ContentReader (streaming) allows oversized request bodies in cpp-httplib

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib httplib.h does not enforce Server::setpayloadmaxlength on the decompressed request body when using HandlerWithContentReader streaming ContentReader with Content-Encoding: gzip or other...

CVE-2026-28435

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib httplib.h does not enforce Server::setpayloadmaxlength on the decompressed request body when using HandlerWithContentReader streaming ContentReader with Content-Encoding: gzip or other...

CVE-2026-28435 Payload size limit bypass via gzip decompression in ContentReader (streaming) allows oversized request bodies in cpp-httplib

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib httplib.h does not enforce Server::setpayloadmaxlength on the decompressed request body when using HandlerWithContentReader streaming ContentReader with Content-Encoding: gzip or other...

CVE-2026-28434 cpp-httplib's default exception handler leaks e.what() to clients via EXCEPTION_WHAT response header

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++ exception and the application has not registered a custom exception handler via setexceptionhandler, the library catches the exception and writes its message...