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...

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-2026-28434 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...

CVE-2026-28434

The CVE affects cpp-httplib (C++11 single-file header-only library). Before 0.35.0, if a request handler throws an exception and no custom exception handler is registered via set_exception_handler(), the library writes the exception message into the HTTP response header EXCEPTION_WHAT and sends i...

cpp-httplib 安全漏洞

cpp-httplib is a C++ library developed by Yhirose, which includes HTTP/HTTPS server and client components. Versions of cpp-httplib prior to 0.35.0 contained security vulnerabilities. These vulnerabilities stemmed from the lack of enforcement of payload size restrictions on decompressed request...

PT-2026-23046

Name of the Vulnerable Software and Affected Versions cpp-httplib versions prior to 0.35.0 Description cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Before version 0.35.0, the library does not enforce the payload size limit configured via Server::set payload ma...

OPENSUSE-SU-2026:20295-1 Security update for cpp-httplib

This update for cpp-httplib fixes the following issues: - CVE-2025-53629: header can allocate memory arbitrarily in the server, potentially leading to its exhaustion bsc1246471. - CVE-2025-53628: HTTP header smuggling due to insecure trailers merge bsc1246468...

SUSE-SU-2026:20600-1 Security update for cpp-httplib

This update for cpp-httplib fixes the following issues: - CVE-2025-53629: header can allocate memory arbitrarily in the server, potentially leading to its exhaustion bsc1246471. - CVE-2025-53628: HTTP header smuggling due to insecure trailers merge bsc1246468...

[SECURITY] Fedora 43 Update: cpp-httplib-0.30.1-5.fc43

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!...

SUSE: Security Advisory (SUSE-SU-2026:20090-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Fedora 42 : cpp-httplib (2026-3b0e5b457d)

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-3b0e5b457d advisory. Update to 0.30.1 - Denial of service DOS using zip bomb CVE-2026-22776 - CRLF injection in http headers CVE-2026-21428 - Untrusted HTTP Header...

Fedora 43 : cpp-httplib (2026-e50e41fcea)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-e50e41fcea advisory. Update to 0.30.1 - Denial of service DOS using zip bomb CVE-2026-22776 - CRLF injection in http headers CVE-2026-21428 - Untrusted HTTP Header...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : cpp-httplib vulnerability (USN-7962-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by a vulnerability as referenced in the USN-7962-1 advisory. It was discovered that cpp-httplib did not correctly handle HTTP headers. A remote attacker could possibly use this issue to bypass...

Ubuntu: Security Advisory (USN-7962-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

openSUSE 16 Security Update : cpp-httplib (openSUSE-SU-2026:20056-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20056-1 advisory. - CVE-2025-66570: IP spoofing, log poisoning, and authorization bypass via header shadowing due to acceptance and parsing of client-controlled...

Security update for cpp-httplib (critical)

openSUSE security update: security update for cpp-httplib ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:20056-1 Rating: critical References: bsc1254734 bsc1254735 Cross-References: CVE-2025-66570 CVE-2025-66577 CVSS scores: CVE-2025-66570 SUSE : 1...

USN-7962-1: cpp-httplib vulnerability

It was discovered that cpp-httplib did not correctly handle HTTP headers. A remote attacker could possibly use this issue to bypass authorization and impersonate users...

USN-7962-1 cpp-httplib vulnerability

It was discovered that cpp-httplib did not correctly handle HTTP headers. A remote attacker could possibly use this issue to bypass authorization and impersonate users...

SUSE CVE-2026-22776

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.1, a Denial of Service DoS vulnerability exists in cpp-httplib due to the unsafe handling of compressed HTTP request bodies Content-Encoding: gzip, br, etc.. The library validates the...

CVE-2026-22776

A flaw was found in cpp-httplib, a C++ HTTP/HTTPS library. A remote attacker can exploit this vulnerability by sending a specially crafted compressed HTTP request. While the library checks the size of the compressed data, it does not properly limit the size of the data after decompression, leadin...