CVE-2026-52844: falha de alta gravidade em caddyserver caddy
Caddy: Windows `file_server` path authorization bypass via encoded backslash
Publicada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.5epss 0.6%
Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, on Windows, Caddy path matchers treat /private\secret.txt as outside /private/*, but file_server later resolves the same request path as private\secret.txt on disk. An unauthenticated remote client can bypass Caddy path-scoped auth/deny routes protecting /private/*. This vulnerability is fixed in 2.11.4.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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-2026-27590HIGHCaddy: 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%CVE-2026-52845HIGHCaddy: FastCGI header normalization bypass in `forward_auth copy_headers`EPSS 0.4%