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Fedora 42 cpp-httplib Update 0.37.1 Fixes Denial of Service 2026-6ed9c65eaf

fedora
Calendar Grey March 21, 2026
Dist Fedora Esm H88
Update to cpp-httplib 0.37.1 for Fedora 42 fixes DoS risk via malformed headers, improving security and stability.
Update to 0.37.1 (rbhz#2445943) Fixes Denial of Service via malformed Content-Length header (CVE-2026-31870 Reenables 32-bit build Update to 0.37.0 (rhbz#2441656)

Summary

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!

Update Information:

Update to 0.37.1 (rbhz#2445943) Fixes Denial of Service via malformed Content-Length header (CVE-2026-31870 Reenables 32-bit build Update to 0.37.0 (rhbz#2441656) Fixes Denial of Service via crafted HTTP POST request (CVE-2026-29076, rhbz#2445663) Update to 0.35.0 Payload size limit bypass via gzip decompression in ContentReader (streaming) allows oversized request bodies (CVE-2026-28435, rhbz#2444638) Default exception handler leaks e.what() to clients via EXCEPTION_WHAT response header (CVE-2026-28434, rhbz#2444636) httplib/compare/v0.32.0...v0.37.0

Topics%20covered

Topics Covered

security advisory fedora DoS content-length cpp-httplib malformed

Change Log

* Thu Mar 12 2026 Petr Men\u0161k - 0.37.1-2 - Build for 32 bits again * Thu Mar 12 2026 Petr Men\u0161k - 0.37.1-1 - Update to 0.37.1 (rhbz#2445943) - Fixes Denial of Service via malformed Content-Length header (CVE-2026-31870) - httplib/security/advisories/GHSA-39q5-hh6x-jpxx - httplib/releases/tag/v0.37.1 * Mon Mar 9 2026 Petr Men\u0161k - 0.37.0-1 - Update to 0.37.0 (rhbz#2441656) - Fixes Denial of Service via crafted HTTP POST request (CVE-2026-29076)

References


[ 1 ] Bug #2441656 - cpp-httplib-0.37.0 is available https://bugzilla.redhat.com/show_bug.cgi?id=2441656 [ 2 ] Bug #2444636 - CVE-2026-28434 cpp-httplib: default exception handler leaks e.what() to clients via EXCEPTION_WHAT response header [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2444636 [ 3 ] Bug #2444638 - CVE-2026-28435 cpp-httplib: payload size limit bypass via gzip decompression in ContentReader (streaming) allows oversized request bodies [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2444638 [ 4 ] Bug #2445663 - CVE-2026-29076 cpp-httplib: cpp-httplib: Denial of Service via crafted HTTP POST request [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2445663 [ 5 ] Bug #2445943 - cpp-httplib-0.37.1 is available https://bugzilla.redhat.com/show_bug.cgi?id=2445943 [ 6 ] Bug #2446926 - CVE-2026-31870 cpp-httplib: cpp-httplib: Denial of Service via malformed Content-Length header [fedora-all] ...

Read the Full Advisory

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-6ed9c65eaf' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
important
Lowest
Low
Medium
High
Critical

Name: cpp-httplib
Product: Fedora 42
Version: 0.37.1
Release: 2.fc42
URL: httplib
Summary: A C++11 single-file header-only cross platform HTTP/HTTPS library

Topics%20covered

Topics Covered

security advisory fedora DoS content-length cpp-httplib malformed

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