Vulnerability Details CVE-2026-52844
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 31.5%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-52844
-
cpe:2.3:a:caddyserver:caddy:0.10.0
-
cpe:2.3:a:caddyserver:caddy:0.10.1
-
cpe:2.3:a:caddyserver:caddy:0.10.10
-
cpe:2.3:a:caddyserver:caddy:0.10.11
-
cpe:2.3:a:caddyserver:caddy:0.10.12
-
cpe:2.3:a:caddyserver:caddy:0.10.13
-
cpe:2.3:a:caddyserver:caddy:0.10.14
-
cpe:2.3:a:caddyserver:caddy:0.10.2
-
cpe:2.3:a:caddyserver:caddy:0.10.3
-
cpe:2.3:a:caddyserver:caddy:0.10.4
-
cpe:2.3:a:caddyserver:caddy:0.10.5
-
cpe:2.3:a:caddyserver:caddy:0.10.6
-
cpe:2.3:a:caddyserver:caddy:0.10.7
-
cpe:2.3:a:caddyserver:caddy:0.10.8
-
cpe:2.3:a:caddyserver:caddy:0.10.9
-
cpe:2.3:a:caddyserver:caddy:0.11.0
-
cpe:2.3:a:caddyserver:caddy:0.11.1
-
cpe:2.3:a:caddyserver:caddy:0.5.0
-
cpe:2.3:a:caddyserver:caddy:0.5.1
-
cpe:2.3:a:caddyserver:caddy:0.6.0
-
cpe:2.3:a:caddyserver:caddy:0.7.0
-
cpe:2.3:a:caddyserver:caddy:0.7.1
-
cpe:2.3:a:caddyserver:caddy:0.7.2
-
cpe:2.3:a:caddyserver:caddy:0.7.3
-
cpe:2.3:a:caddyserver:caddy:0.7.4
-
cpe:2.3:a:caddyserver:caddy:0.7.5
-
cpe:2.3:a:caddyserver:caddy:0.7.6
-
cpe:2.3:a:caddyserver:caddy:0.8.0
-
cpe:2.3:a:caddyserver:caddy:0.8.1
-
cpe:2.3:a:caddyserver:caddy:0.8.2
-
cpe:2.3:a:caddyserver:caddy:0.8.3
-
cpe:2.3:a:caddyserver:caddy:0.9.0
-
cpe:2.3:a:caddyserver:caddy:0.9.1
-
cpe:2.3:a:caddyserver:caddy:0.9.2
-
cpe:2.3:a:caddyserver:caddy:0.9.3
-
cpe:2.3:a:caddyserver:caddy:0.9.4
-
cpe:2.3:a:caddyserver:caddy:0.9.5
-
cpe:2.3:a:caddyserver:caddy:1.0.0
-
cpe:2.3:a:caddyserver:caddy:1.0.1
-
cpe:2.3:a:caddyserver:caddy:1.0.2
-
cpe:2.3:a:caddyserver:caddy:1.0.3
-
cpe:2.3:a:caddyserver:caddy:1.0.4
-
cpe:2.3:a:caddyserver:caddy:1.0.5
-
cpe:2.3:a:caddyserver:caddy:2.0.0
-
cpe:2.3:a:caddyserver:caddy:2.1.0
-
cpe:2.3:a:caddyserver:caddy:2.1.1
-
cpe:2.3:a:caddyserver:caddy:2.10.0
-
cpe:2.3:a:caddyserver:caddy:2.10.1
-
cpe:2.3:a:caddyserver:caddy:2.10.2
-
cpe:2.3:a:caddyserver:caddy:2.11.0
-
cpe:2.3:a:caddyserver:caddy:2.11.1
-
cpe:2.3:a:caddyserver:caddy:2.11.2
-
cpe:2.3:a:caddyserver:caddy:2.11.3
-
cpe:2.3:a:caddyserver:caddy:2.2.0
-
cpe:2.3:a:caddyserver:caddy:2.2.1
-
cpe:2.3:a:caddyserver:caddy:2.2.3
-
cpe:2.3:a:caddyserver:caddy:2.3.0
-
cpe:2.3:a:caddyserver:caddy:2.4.0
-
cpe:2.3:a:caddyserver:caddy:2.4.1
-
cpe:2.3:a:caddyserver:caddy:2.4.2
-
cpe:2.3:a:caddyserver:caddy:2.4.3
-
cpe:2.3:a:caddyserver:caddy:2.4.4
-
cpe:2.3:a:caddyserver:caddy:2.4.5
-
cpe:2.3:a:caddyserver:caddy:2.4.6
-
cpe:2.3:a:caddyserver:caddy:2.5.0
-
cpe:2.3:a:caddyserver:caddy:2.5.1
-
cpe:2.3:a:caddyserver:caddy:2.5.2
-
cpe:2.3:a:caddyserver:caddy:2.6.0
-
cpe:2.3:a:caddyserver:caddy:2.6.1
-
cpe:2.3:a:caddyserver:caddy:2.6.2
-
cpe:2.3:a:caddyserver:caddy:2.6.3
-
cpe:2.3:a:caddyserver:caddy:2.6.4
-
cpe:2.3:a:caddyserver:caddy:2.7.0
-
cpe:2.3:a:caddyserver:caddy:2.7.1
-
cpe:2.3:a:caddyserver:caddy:2.7.2
-
cpe:2.3:a:caddyserver:caddy:2.7.3
-
cpe:2.3:a:caddyserver:caddy:2.7.4
-
cpe:2.3:a:caddyserver:caddy:2.7.5
-
cpe:2.3:a:caddyserver:caddy:2.7.6
-
cpe:2.3:a:caddyserver:caddy:2.8.0
-
cpe:2.3:a:caddyserver:caddy:2.8.1
-
cpe:2.3:a:caddyserver:caddy:2.8.2
-
cpe:2.3:a:caddyserver:caddy:2.8.3
-
cpe:2.3:a:caddyserver:caddy:2.8.4
-
cpe:2.3:a:caddyserver:caddy:2.9.0
-
cpe:2.3:a:caddyserver:caddy:2.9.1
-
cpe:2.3:o:microsoft:windows:-