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CVE-2026-27585

MEDIUM

6.5

Description

Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the path sanitization routine in file matcher doesn't sanitize backslashes which can lead to bypassing path related security protections. It affects users with specific Caddy and environment configurations. Version 2.11.1 fixes the issue.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/24/2026

Last Modified2/25/2026

Sourcenvd

Honeypot Sightings0

Affected Products

caddyserver:caddy

Weaknesses (CWE)

CWE-20

References

https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L361(security-advisories@github.com)

https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L398(security-advisories@github.com)

https://github.com/caddyserver/caddy/releases/tag/v2.11.1(security-advisories@github.com)

https://github.com/caddyserver/caddy/security/advisories/GHSA-4xrr-hq4w-6vf4(security-advisories@github.com)

IOC Correlations

No correlations recorded

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