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.

CVSS v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.62% chance of exploitation in the next 30 days, 47th percentile

Published

2026-06-23

Proof-of-concept exploits (1)

• advisories/GHSA-qrp7-cvwr-j2c6

References

• CVE Record
• NVD entry

Related

• CVE-2026-52841
• CVE-2026-52845
• CVE-2026-52840
• CVE-2026-52846
• CVE-2026-52839
• CVE-2026-52854