Improper input validation in Caddyserver Caddy
CVE-2026-27585
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…
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.001 (30.9th percentile) — read the EPSS interpretation.
Affected products
- Caddyserver Caddy — versions < 2.11.1
Weakness classification (CWE)
References
- https://github.com/caddyserver/caddy/security/advisories/GHSA-4xrr-hq4w-6vf4 (x_refsource_CONFIRM)
- https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L361 (x_refsource_MISC)
- https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L398 (x_refsource_MISC)
- https://github.com/caddyserver/caddy/releases/tag/v2.11.1 (x_refsource_MISC)