Caddy Web Server Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) Vulnerability - CVE-2026-52844
Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4 on Windows Caddy path matchers treat /privatesecret.txt as outside /private/ but file_server later resolves the same request path as privatesecret.txt on disk. An unauthenticated remote client can bypass Caddy path-scoped auth/deny routes protecting /private/. This vulnerability is fixed in 2.11.4.