Improper Access Control

Caddy is vulnerable to Improper Access Control. The vulnerability is due to incorrect case-insensitive matching in the HTTP host request matcher when large host lists are configured, allowing attackers to modify the casing of the Host header and bypass host-based routing or associated access...

BIT-AUTHENTIK-2026-25748 authentik has a forward authentication bypass with broken cookie

authentik is an open-source identity provider. Prior to 2025.10.4 and 2025.12.4, with a malformed cookie it was possible to bypass authentication when using forward authentication in the authentik Proxy Provider when used in conjunction with Traefik or Caddy as reverse proxy. When a malicious...

CVE-2026-30836 vulnerabilities

Vulnerabilities for packages: caddy...

GHSA-Q4R8-XM5F-56GW vulnerabilities

Vulnerabilities for packages: caddy...

GHSA-Q4R8-XM5F-56GW vulnerabilities

Vulnerabilities for packages: frankenphp-8.2, frankenphp-8.4, step-issuer-fips, frankenphp-8.3, caddy-fips, caddy, step-ca-fips, frankenphp-8.5...

CVE-2026-30836 vulnerabilities

Vulnerabilities for packages: frankenphp-8.2, frankenphp-8.4, step-issuer-fips, frankenphp-8.3, caddy-fips, caddy, step-ca-fips, frankenphp-8.5...

GO-2026-4639 Caddy forward_auth copy_headers allows Identity Injection and Privilege Escalation in github.com/caddyserver/caddy

Caddy forwardauth copyheaders Does Not Strip Client-Supplied Headers, Allowing Identity Injection and Privilege Escalation in github.com/caddyserver/caddy...

GO-2026-4644 Caddy's vars_regexp double-expands user input, leaking env vars and files in github.com/caddyserver/caddy

Caddy's varsregexp double-expands user input, leaking env vars and files in github.com/caddyserver/caddy...

SUSE CVE-2026-30851

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

SUSE CVE-2026-30852

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

Linux Distros Unpatched Vulnerability : CVE-2026-30851

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Caddy is an extensible server platform that uses TLS by default. From version 2.10.0 to before version 2.11.2, forwardauth copyheaders does not strip...

Linux Distros Unpatched Vulnerability : CVE-2026-30852

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Caddy is an extensible server platform that uses TLS by default. From version 2.7.5 to before version 2.11.2, the varsregexp matcher in vars.go:337 double-expan...

CVE-2026-30851

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

CVE-2026-30852

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

CVE-2026-30851

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

CVE-2026-30852

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

UBUNTU-CVE-2026-30851

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

UBUNTU-CVE-2026-30852

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

CVE-2026-30851 Caddy forward_auth copy_headers Does Not Strip Client-Supplied Headers, Allowing Identity Injection and Privilege Escalation

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

CVE-2026-30851

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