CVE-2026-52844
Fixed in a distro release EPSS <1%CVSS 7.5
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.
Products: caddyserver caddy
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Go | github.com/caddyserver/caddy | no fix |
| Go | github.com/caddyserver/caddy/v2 | 2.11.4 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian:14 | caddy | 2.11.4-1 |
| SUSE:Linux Enterprise Server 16.0 | govulncheck-vulndb | 0.0.20260727T201416-160000.1.1 |
| SUSE:Linux Enterprise Server for SAP applications 16.0 | govulncheck-vulndb | 0.0.20260727T201416-160000.1.1 |
| Ubuntu:25.10 | caddy | no fix |
| Ubuntu:26.10 | caddy | no fix |
| Ubuntu:Pro:24.04:LTS | caddy | no fix |
| Ubuntu:Pro:26.04:LTS | caddy | no fix |
| openSUSE:Leap 16.0 | govulncheck-vulndb | 0.0.20260727T201416-160000.1.1 |