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7.5High

CVE-2026-52844Caddy: Windows `file_server` path authorization bypass via encoded backslash

caddyserver caddy Published: (4 months ago)

Description

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.

Weakness (CWE): CWE-22CWE-284

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
caddyserver caddy < 2.11.4

References and patches

CPE matches (NVD) (1)
  • cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:* < 2.11.4

Recent CVEs in the same product — Caddy

6.5Medium
CVE-2026-77281

Caddy: rewrite placeholder re-expansion

caddyserver caddy

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite() can pass attacker-con…