GHSA-J8PX-RMRX-76H9 Caddy: rewrite placeholder re-expansion, unbounded body buffer DoS, and fileHidden case-sensitivity bypass

Caddy v2.11.3 — Three vulnerabilities in handler/placeholder layer Tested against: caddy:2.11.3 official Docker image, SHA verified at runtime Reproduction environment: Docker Desktop 4.73.1 / Engine 29.4.3 on Windows 10 host, isolated containers, no network egress required for any of the exploit...

EUVD-2026-82474

Caddy: rewrite placeholder re-expansion, unbounded body buffer DoS, and fileHidden case-sensitivity bypass...

DEBIAN-CVE-2026-77281

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite can pass attacker-controlled replacement bytes through...

CVE-2026-77281

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite can pass attacker-controlled replacement bytes through...

CVE-2026-54907

Caddy Proxy Manager is a web interface for managing Caddy Server reverse proxies and certificates. Prior to 1.5.1, Caddy Proxy Manager enables email and password self-registration by default at /api/auth/sign-up/email, allowing an unauthenticated remote actor to create an active account with the...

UBUNTU-CVE-2026-77281

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite can pass attacker-controlled replacement bytes through...

CVE-2026-77281

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite can pass attacker-controlled replacement bytes through...

CVE-2026-77281

Caddy (an extensible HTTP server platform) versions 2.11.3 and earlier are affected by a placeholder re-expansion vulnerability in the rewrite handler (modules/caddyhttp/rewrite/rewrite.go). When a rewrite URI ends with a literal question mark, Rewrite.Rewrite() passes attacker-controlled replace...

CVE-2026-77281 Caddy: rewrite placeholder re-expansion

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite can pass attacker-controlled replacement bytes through...

CVE-2026-77281 Caddy: rewrite placeholder re-expansion

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite can pass attacker-controlled replacement bytes through...

CVE-2026-77281

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite can pass attacker-controlled replacement bytes through...

CVE-2026-77281 Caddy: rewrite placeholder re-expansion

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite can pass attacker-controlled replacement bytes through...

CVE-2026-54907 Caddy Proxy Manager: Registrations enabled by default allows creating users with "user" permission

Caddy Proxy Manager is a web interface for managing Caddy Server reverse proxies and certificates. Prior to 1.5.1, Caddy Proxy Manager enables email and password self-registration by default at /api/auth/sign-up/email, allowing an unauthenticated remote actor to create an active account with the...

CVE-2026-54907 Caddy Proxy Manager: Registrations enabled by default allows creating users with "user" permission

Caddy Proxy Manager is a web interface for managing Caddy Server reverse proxies and certificates. Prior to 1.5.1, Caddy Proxy Manager enables email and password self-registration by default at /api/auth/sign-up/email, allowing an unauthenticated remote actor to create an active account with the...

CVE-2026-54907 Caddy Proxy Manager: Registrations enabled by default allows creating users with "user" permission

Caddy Proxy Manager is a web interface for managing Caddy Server reverse proxies and certificates. Prior to 1.5.1, Caddy Proxy Manager enables email and password self-registration by default at /api/auth/sign-up/email, allowing an unauthenticated remote actor to create an active account with the...

CVE-2026-54907

Caddy Proxy Manager , a web interface for managing Caddy Server reverse proxies and certificates, enabled email and password self-registration by default (at /api/auth/sign-up/email) prior to version 1.5.1 . This allowed an unauthenticated remote actor to create an active account with the user ro...

EUVD-2026-82468

Caddy Proxy Manager is a web interface for managing Caddy Server reverse proxies and certificates. Prior to 1.5.1, Caddy Proxy Manager enables email and password self-registration by default at /api/auth/sign-up/email, allowing an unauthenticated remote actor to create an active account with the...

Moderate: Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: caddy: caddy-2.11.4-0.4.hum1 aarch64, x8664 caddy-2.11.4-0.4.hum1.src src Security Fixes: caddy: CVE-2026-81871...

CVE-2026-54907: Initialization of a Resource with an Insecure Default

Caddy Proxy Manager is a web interface for managing Caddy Server reverse proxies and certificates. Prior to 1.5.1, Caddy Proxy Manager enables email and password self-registration by default at /api/auth/sign-up/email, allowing an unauthenticated remote actor to create an active account with the...

CVE-2026-77281: Improper Control of Generation of Code

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite can pass attacker-controlled replacement bytes through...