CVE-2026-27585

6.5 MEDIUM
Published: February 24, 2026 Modified: February 25, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L361
Source: security-advisories@github.com
Product
https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L398
Source: security-advisories@github.com
Product
https://github.com/caddyserver/caddy/releases/tag/v2.11.1
Source: security-advisories@github.com
Release Notes
https://github.com/caddyserver/caddy/security/advisories/GHSA-4xrr-hq4w-6vf4
Source: security-advisories@github.com
Exploit Vendor Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.5 / 10.0
EPSS (Exploit Probability)
0.1%
27th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-20

Affected Vendors

caddyserver

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