CVE-2026-27585: falha de média gravidade em caddyserver caddy
Caddy's improper sanitization of glob characters in file matcher may lead to bypassing security protections
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
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
Produtos afetados
caddyserver · caddyCVEs relacionadas — caddyserver caddy
No mesmo produto, das mais perigosas para as 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%
Referências
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