Caddy Project

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

An issue was discovered in caddy (for TYPO3) before 7.2.10. The vulnerability exists due to insufficient filtration of user-supplied data in the "paymillToken" HTTP POST parameter passed to the "caddy/Resources/Public/JavaScript/e-payment/paymill/api/php/payment.php" URL. An…

### Summary `forward_auth copy_headers` deletes the exact client-supplied identity header before copying the trusted value from the auth gateway. But when the request later goes through `php_fastcgi`, Caddy normalizes HTTP headers into CGI variables by replacing `-` with `_`. …

### Summary On Windows, Caddy `path` matchers treat `/private\secret.txt` as outside `/private/*`, but `file_server` later resolves the same request path as `private\secret.txt` on disk. An unauthenticated remote client can request `/private%5csecret.txt` and bypass Caddy…

### Summary The FastCGI transport's `splitPos()` in [`modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go`](https://github.com/caddyserver/caddy/blob/master/modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go) misuses `golang.org/x/text/search` with `search.IgnoreCase` when the…

Cross-Site Request Forgery (CSRF) vulnerability in Tribe Interactive Caddy – Smart Side Cart for WooCommerce.This issue affects Caddy – Smart Side Cart for WooCommerce: from n/a through 1.9.7.

Directory traversal vulnerability in myServer 0.7 allows remote attackers to list arbitrary directories via an HTTP GET command with a large number of "./" sequences followed by "../" sequences.

Unspecified vulnerability in MyServer 0.8.11 allows remote attackers to cause a denial of service (daemon crash) via multiple invalid requests with the HTTP GET, DELETE, OPTIONS, and possibly other methods, related to a "204 No Content error."

Cross-site scripting (XSS) vulnerability in the cgi-bin/post.mscgi sample page in MyServer 0.8.9 allows remote attackers to inject arbitrary web script or HTML via the body content.

myServer 0.7.1 allows remote attackers to cause a denial of service (crash) via a long HTTP POST request in a View=Logon operation to index.html.

### Summary Caddy’s `stripHTML` template function cannot reliably remove all HTML tags from input strings. Certain malformed HTML, such as `<<>img src=x onerror=alert()>`, can bypass the tag-stripping logic, potentially leaving dangerous content in the output if it is later…

This report is not about a normal textual prefix-expansion case. The issue here is that the authorization layer and the `/config` traversal layer do **not agree on what object the path refers to**. In this case, a path authorized for one config object is accepted, but then…

Caddy is an extensible server platform that uses TLS by default. From version 2.10.0 to before version 2.11.2, forward_auth copy_headers does not strip client-supplied headers, allowing identity injection and privilege escalation. This issue has been patched in version 2.11.2.

Caddy is an extensible server platform that uses TLS by default. From version 2.7.5 to before version 2.11.2, the vars_regexp matcher in vars.go:337 double-expands user-controlled input through the Caddy replacer. When vars_regexp matches against a placeholder like…

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's FastCGI path splitting logic computes the split index on a lowercased copy of the request path and then uses that byte index to slice the original path. This is unsafe for Unicode…

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the local caddy admin API (default listen `127.0.0.1:2019`) exposes a state-changing `POST /load` endpoint that replaces the entire running configuration. When origin enforcement is not…

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's HTTP `host` request matcher is documented as case-insensitive, but when configured with a large host list (>100 entries) it becomes case-sensitive due to an optimized matching path.…

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, Caddy's HTTP `path` request matcher is intended to be case-insensitive, but when the match pattern contains percent-escape sequences (`%xx`) it compares against the request's escaped path…

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, two swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or…

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the path sanitization routine in file matcher doesn't sanitize backslashes which can lead to bypassing path related security protections. It affects users with specific Caddy and…

MyServer before 0.8.8 allows remote attackers to cause a denial of service via unspecified vectors.

server.cpp in MyServer 0.8.5 calls Process::setuid before calling Process::setgid and thus does not properly drop privileges, which might allow remote attackers to execute CGI programs with unintended privileges.

Directory traversal vulnerability in filemanager.cpp in MyServer 0.8 allows remote attackers to list the parent directory of the web root via a URL with a "..." (triple dot).

Directory traversal vulnerability in MyServer 0.11 and 0.2 allows remote attackers to read arbitrary files via a ".." (dot dot) in an HTTP GET request.