What is CVE-2026-52844?

CVE-2026-52844 is a high-severity vulnerability in Caddyserver Caddy, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-06-23.

How severe is CVE-2026-52844?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Caddyserver Caddy

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 o…

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Caddyserver Caddy — versions < 2.11.4

Weakness classification (CWE)

CWE-22 — Path Traversal
CWE-284 — Improper Access Control

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-52844?: CVE-2026-52844 is a high-severity vulnerability in Caddyserver Caddy, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-06-23.
How severe is CVE-2026-52844?: High severity. CVSS v3 base score is 7.5 out of 10.