CVE-2026-27586
Caddy is an extensible server platform that uses TLS by default. Prior ...
Severidad por fuente
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Descripción
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 malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary. Any deployment using `trusted_ca_cert_file` or `trusted_ca_certs_pem_files` for mTLS will silently degrade to accepting any system-trusted client certificate if the CA file becomes unavailable. This can happen due to a typo in the path, file rotation, corruption, or permission changes. The server gives no indication that mTLS is misconfigured. Version 2.11.1 fixes the vulnerability.
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| alpine 3.23 | caddy | 2.11.2-r0 |
| alpine 3.24 | caddy | 2.11.1-r0 |
| alpine edge | caddy | 2.11.1-r0 |
| debian 14 | caddy | 2.11.2-1 |
| go::GitHub Security Advisory Go | github.com/caddyserver/caddy/v2 | 2.11.1 |
| minimos | caddy | 2.11.1-r0 |
| rapidfort alpine 3.20 | caddy | 2.11.1-r0 |
| rapidfort alpine 3.21 | caddy | 2.11.1-r0 |
| rapidfort alpine 3.22 | caddy | 2.11.1-r0 |
| rapidfort alpine 3.23 | caddy | 2.11.1-r0 |
| rapidfort debian 12 | caddy | 0:2.11.2-1 |
| rapidfort debian 13 | caddy | 0:2.11.2-1 |
Mostrar las 17 entradas de 17 fuentes
| Fuente | Paquete | Corregido en |
|---|---|---|
| alpine 3.23 | caddy | 2.11.2-r0 |
| alpine 3.24 | caddy | 2.11.1-r0 |
| alpine edge | caddy | 2.11.1-r0 |
| debian 14 | caddy | 2.11.2-1 |
| go::GitHub Security Advisory Go | github.com/caddyserver/caddy/v2 | 2.11.1 |
| minimos | caddy | 2.11.1-r0 |
| rapidfort alpine 3.20 | caddy | 2.11.1-r0 |
| rapidfort alpine 3.21 | caddy | 2.11.1-r0 |
| rapidfort alpine 3.22 | caddy | 2.11.1-r0 |
| rapidfort alpine 3.23 | caddy | 2.11.1-r0 |
| rapidfort debian 12 | caddy | 0:2.11.2-1 |
| rapidfort debian 13 | caddy | 0:2.11.2-1 |
| rapidfort fedora 43 | caddy | 2.10.2-9.fc43 |
| rapidfort Oracle Linux 10 | caddy | 2.10.2-9.el10_3 |
| rapidfort ubuntu 20.04 | caddy | 0:2.11.2-1 |
| rapidfort ubuntu 22.04 | caddy | 0:2.11.2-1 |
| rapidfort ubuntu 24.04 | caddy | 0:2.11.2-1 |
Referencias
- https://gist.github.com/moscowchill/9566c79c76c0b64c57f8bd0716f97c48
- https://github.com/caddyserver/caddy
- https://github.com/caddyserver/caddy/commit/d42d39b4bc237c628f9a95363b28044cb7a7fe72
- https://github.com/caddyserver/caddy/releases/tag/v2.11.1
- https://github.com/caddyserver/caddy/security/advisories/GHSA-hffm-g8v7-wrv7
- https://nvd.nist.gov/vuln/detail/CVE-2026-27586
- https://pkg.go.dev/vuln/GO-2026-4539