CVE-2026-27585: fallo de gravedad media en caddyserver caddy
Caddy's improper sanitization of glob characters in file matcher may lead to bypassing security protections
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.9epss 0.4%
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 environment configurations. Version 2.11.1 fixes the issue.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Productos afectados
caddyserver · caddyCVEs relacionadas — caddyserver caddy
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-45135HIGHCaddy: Unsafe Unicode Handling in FastCGI splitPos Allows Execution of Non-PHP FilesEPSS 0.7%CVE-2026-52844HIGHCaddy: Windows `file_server` path authorization bypass via encoded backslashEPSS 0.6%CVE-2026-27590HIGHCaddy: Unicode case-folding length expansion causes incorrect split_path index (SCRIPT_NAME/PATH_INFO confusion) in FastCGI transportEPSS 0.6%CVE-2026-55458LOWCaddy: RFC 7230 §6.1 compliance issue / Hop-by-hop headers that leak throughEPSS 0.5%CVE-2026-77281MEDIUMCaddy: rewrite placeholder re-expansionEPSS 0.5%CVE-2026-30852MEDIUMCaddy: vars_regexp double-expands user input, leaking env vars and filesEPSS 0.5%
Referencias
https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L361https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L398https://github.com/caddyserver/caddy/releases/tag/v2.11.1https://github.com/caddyserver/caddy/security/advisories/GHSA-4xrr-hq4w-6vf4