CVE-2026-52844

Name: CVE-2026-52844
Creator: NVD / NIST
Published: 2026-06-23T18:18:05.137+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.40%

Last modified Jun 23, 2026

CVE-2026-52844 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.40%

31.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

References

Timeline

Published: Jun 23, 2026
Last Modified: Jun 23, 2026
Status: Undergoing Analysis

Frequently Asked Questions

What is CVE-2026-52844?

How severe is CVE-2026-52844?

CVE-2026-52844 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2026-52844?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-52844?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST