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.

Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-qrp7-cvwr-j2c6 Caddy: Windows `file_server` path authorization bypass via encoded backslash
Fixes

Solution

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Workaround

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History

Tue, 23 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 23 Jun 2026 18:15:00 +0000

Type Values Removed Values Added
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.
Title Caddy: Windows `file_server` path authorization bypass via encoded backslash
Weaknesses CWE-22
CWE-284
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-23T20:06:12.019Z

Reserved: 2026-06-08T18:41:27.724Z

Link: CVE-2026-52844

cve-icon Vulnrichment

Updated: 2026-06-23T20:06:06.864Z

cve-icon NVD

No data.

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses