CVE-2026-20896

CVE-2026-20896 affects Gitea Docker images up to and including 1.26.2. The root cause is the default setting REVERSE_PROXY_TRUSTED_PROXIES=*, which can let an attacker impersonate a user when reverse-proxy authentication headers (e.g., X-WEBAUTH-USER) are enabled. Several sources document this, i...

SUSE CVE-2026-46527

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::settrustedproxies with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid ...

CVE-2026-46527

A flaw was found in cpp-httplib, a C++ HTTP/HTTPS library. When a server using cpp-httplib has configured trusted proxies, a remote attacker can send a specially crafted HTTP request with a malformed X-Forwarded-For header. This can lead to undefined behavior, resulting in abnormal process...

Linux Distros Unpatched Vulnerability : CVE-2026-46527

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 0.44.0, When the server has called Server::settrustedproxies with a...

Symfony: Twilio SMS Notifier allows unauthenticated webhook injection due to missing X-Twilio-Signature verification

Description The Twilio SMS notifier bridge ships a webhook request parser used to authenticate and decode the status callbacks Twilio POSTs to an application's webhook endpoint. Its doParseRequest $request, \SensitiveParameter string $secret method receives the configured webhook secret but never...

GHSA-55RJ-X2VC-4WHQ Symfony: Twilio SMS Notifier allows unauthenticated webhook injection due to missing X-Twilio-Signature verification

Description The Twilio SMS notifier bridge ships a webhook request parser used to authenticate and decode the status callbacks Twilio POSTs to an application's webhook endpoint. Its doParseRequest $request, \SensitiveParameter string $secret method receives the configured webhook secret but never...

NULL Pointer Dereference

Overview Affected versions of this package are vulnerable to NULL Pointer Dereference in the getclientip process when the server is configured with trusted proxies and receives a specially crafted X-Forwarded-For header that parses to no valid IP segments. An attacker can cause abnormal process...

CVE-2026-46527

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::settrustedproxies with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid ...

DEBIAN-CVE-2026-46527

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::settrustedproxies with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid ...

UBUNTU-CVE-2026-46527

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::settrustedproxies with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid ...

EUVD-2026-33426

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::settrustedproxies with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid ...

CVE-2026-46527 cpp-httplib: Malicious `X-Forwarded-For` Under Trusted-Proxy Configuration Triggers Empty `vector::front()`, Leading to Undefined Behavior and Server Crash

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::settrustedproxies with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid ...

CVE-2026-46527 cpp-httplib: Malicious `X-Forwarded-For` Under Trusted-Proxy Configuration Triggers Empty `vector::front()`, Leading to Undefined Behavior and Server Crash

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::settrustedproxies with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid ...

CVE-2026-46527

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::settrustedproxies with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid ...

CVE-2026-46527

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, When the server has called Server::settrustedproxies with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid ...

CVE-2026-46527

cpp-httplib (C++11 header-only library) before 0.44.0 is vulnerable when Server::set_trusted_proxies() is used with a non-empty trusted-proxy list. An attacker can send an HTTP request with an X-Forwarded-For header that parses to no valid IP segments. The code path then calls get_client_ip(), wh...

PT-2026-44991

Name of the Vulnerable Software and Affected Versions cpp-httplib versions prior to 0.44.0 Description A denial of service occurs when the server uses the set trusted proxies function with a non-empty trusted-proxy list. An attacker can send an HTTP request containing an X-Forwarded-For header wi...

Caddy Defender trusted proxy client IP bypass

Impact Caddy Defender used r.RemoteAddr when evaluating whether a request should be blocked. RemoteAddr is the address of the immediate peer connected to Caddy. In deployments where Caddy is behind a trusted proxy, CDN, or load balancer, the immediate peer is usually the proxy, not the original...

GHSA-3H23-RRPC-3P87 Caddy Defender trusted proxy client IP bypass

Impact Caddy Defender used r.RemoteAddr when evaluating whether a request should be blocked. RemoteAddr is the address of the immediate peer connected to Caddy. In deployments where Caddy is behind a trusted proxy, CDN, or load balancer, the immediate peer is usually the proxy, not the original...

PT-2026-42048

Name of the Vulnerable Software and Affected Versions Caddy Defender versions prior to 0.10.1 Description The software incorrectly used r.RemoteAddr to evaluate whether a request should be blocked. In environments where Caddy is positioned behind a trusted proxy, CDN, or load balancer, RemoteAddr...