CVE-2026-77341 cpp-httplib: CRLF injection via unvalidated HTTP trailer headers in chunked response writing

cpp-httplib is a C++ header-only HTTP/HTTPS library. In version 0.49.0, the chunked-response trailer output path writes trailer header names and values directly to the socket without validating them, allowing CRLF sequences in a trailer field to inject additional headers or split the HTTP respons...

CVE-2026-77341

cpp-httplib (a C++ header-only HTTP/HTTPS library) version 0.49.0 is vulnerable to CRLF injection in its chunked-response trailer output path. Unlike every other header-writing path in the library, the trailer-writing code applies no field-name or field-value checks to reject carriage return and ...

CVE-2026-77341 cpp-httplib: CRLF injection via unvalidated HTTP trailer headers in chunked response writing

cpp-httplib is a C++ header-only HTTP/HTTPS library. In version 0.49.0, the chunked-response trailer output path writes trailer header names and values directly to the socket without validating them, allowing CRLF sequences in a trailer field to inject additional headers or split the HTTP respons...

CVE-2026-77341

cpp-httplib is a C++ header-only HTTP/HTTPS library. In version 0.49.0, the chunked-response trailer output path writes trailer header names and values directly to the socket without validating them, allowing CRLF sequences in a trailer field to inject additional headers or split the HTTP respons...

CVE-2026-77341 cpp-httplib: CRLF injection via unvalidated HTTP trailer headers in chunked response writing

cpp-httplib is a C++ header-only HTTP/HTTPS library. In version 0.49.0, the chunked-response trailer output path writes trailer header names and values directly to the socket without validating them, allowing CRLF sequences in a trailer field to inject additional headers or split the HTTP respons...

EUVD-2026-67299

cpp-httplib is a C++ header-only HTTP/HTTPS library. In version 0.49.0, the chunked-response trailer output path writes trailer header names and values directly to the socket without validating them, allowing CRLF sequences in a trailer field to inject additional headers or split the HTTP respons...

CVE-2026-77341

cpp-httplib is a C++ header-only HTTP/HTTPS library. In version 0.49.0, the chunked-response trailer output path writes trailer header names and values directly to the socket without validating them, allowing CRLF sequences in a trailer field to inject additional headers or split the HTTP respons...

PT-2026-82795

Name of the Vulnerable Software and Affected Versions cpp-httplib versions prior to 0.50.0 Description The chunked-response trailer output path writes trailer header names and values directly to the socket without validation. This lack of checks for carriage return CR and line feed LF sequences...

PT-2026-82796

Name of the Vulnerable Software and Affected Versions cpp-httplib versions 0.33.0 through 0.50.0 Description The TLS-enabled WebSocket client contains a use-after-free flaw. In the shutdown and close function, the SSL object is freed and its pointer is cleared; however, the subsequent WebSocket...

Linux Distros Unpatched Vulnerability : CVE-2026-54919

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. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the SSLClient and Client processes in HTTPS mode when connecting to an IP-literal host with server certificate verification enabled. An attacker can intercept and manipulate encrypted traffic by...

DEBIAN-CVE-2026-54919

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL backend versions from 0.33.0 through 0.46.1, when cpp-httplib is built with CPPHTTPLIBMBEDTLSSUPPORT or CPPHTTPLIBWOLFSSLSUPPORT and a...

CVE-2026-54919

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL backend versions from 0.33.0 through 0.46.1, when cpp-httplib is built with CPPHTTPLIBMBEDTLSSUPPORT or CPPHTTPLIBWOLFSSLSUPPORT and a...

CVE-2026-54919

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL backend versions from 0.33.0 through 0.46.1, when cpp-httplib is built with CPPHTTPLIBMBEDTLSSUPPORT or CPPHTTPLIBWOLFSSLSUPPORT and a...

UBUNTU-CVE-2026-54919

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL backend versions from 0.33.0 through 0.46.1, when cpp-httplib is built with CPPHTTPLIBMBEDTLSSUPPORT or CPPHTTPLIBWOLFSSLSUPPORT and a...

EUVD-2026-42942

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL backend versions from 0.33.0 through 0.46.1, when cpp-httplib is built with CPPHTTPLIBMBEDTLSSUPPORT or CPPHTTPLIBWOLFSSLSUPPORT and a...

CVE-2026-54919 cpp-httplib: TLS certificate chain verification bypassed for IP-literal hosts on Mbed TLS and wolfSSL backends

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL backend versions from 0.33.0 through 0.46.1, when cpp-httplib is built with CPPHTTPLIBMBEDTLSSUPPORT or CPPHTTPLIBWOLFSSLSUPPORT and a...

CVE-2026-54919

cpp-httplib on Mbed TLS and wolfSSL backends was vulnerable to a TLS certificate chain verification bypass for IP-literal hosts (affecting v0.31.0–0.46.1) when server verification was enabled; SSLClient/Client could skip chain validation and Mbed TLS WebSocketClient could skip verification. The i...

CVE-2026-54919

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL backend versions from 0.33.0 through 0.46.1, when cpp-httplib is built with CPPHTTPLIBMBEDTLSSUPPORT or CPPHTTPLIBWOLFSSLSUPPORT and a...

PT-2026-57218

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL backend versions from 0.33.0 through 0.46.1, when cpp-httplib is built with CPPHTTPLIB MBEDTLS SUPPORT or CPPHTTPLIB WOLFSSL SUPPORT and a...