Caddy: FastCGI header normalization bypass in `forward_auth copy_headers`

Summary forwardauth copyheaders deletes the exact client-supplied identity header before copying the trusted value from the auth gateway. But when the request later goes through phpfastcgi, Caddy normalizes HTTP headers into CGI variables by replacing - with . This lets a client send an underscor...

SUSE CVE-2025-66570

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.27.0, a vulnerability allows attacker-controlled HTTP headers to influence server-visible metadata, logging, and authorization decisions. An attacker can inject headers named REMOTEADDR, REMOTEPORT,...

Linux Distros Unpatched Vulnerability : CVE-2025-66570

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 0.27.0, a vulnerability allows attacker-controlled HTTP headers to...

Mastodon Code Issue Vulnerability

Mastodon is an open source social networking server based on ActivityPub. A code issue vulnerability exists in Mastodon v4.2.6 and earlier versions, which stems from obtaining remote state without checking whether the remote server's response has a header value...

UBUNTU-CVE-2017-6508

CRLF injection vulnerability in the urlparse function in url.c in Wget through 1.19.1 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in the host subcomponent of a URL...