Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Caddyserver | Caddy | < 2.11.4 |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- https://github.com/caddyserver/caddy/security/advisories/GHSA-qrp7-cvwr-j2c6Third Party AdvisoryExploit
- https://github.com/caddyserver/caddy/security/advisories/GHSA-qrp7-cvwr-j2c6Third Party AdvisoryExploit
FAQ
What is CVE-2026-52844?
CVE-2026-52844 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 sa...
How severe is CVE-2026-52844?
CVE-2026-52844 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-52844?
Check the references section above for vendor advisories and patch information. Affected products include: Caddyserver Caddy, Microsoft Windows.