Caddy is an extensible server platform that uses TLS by default. From version 2.10.0 to before version 2.11.2, forward_auth copy_headers does not strip client-supplied headers, allowing identity injection and privilege escalation. This issue has been patched in version 2.11.2.

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Source ID Title
Github GHSA Github GHSA GHSA-7r4p-vjf4-gxv4 Caddy forward_auth copy_headers Does Not Strip Client-Supplied Headers, Allowing Identity Injection and Privilege Escalation
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 11 Mar 2026 13:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:*

Mon, 09 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 09 Mar 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Caddyserver
Caddyserver caddy
Vendors & Products Caddyserver
Caddyserver caddy

Sat, 07 Mar 2026 16:45:00 +0000

Type Values Removed Values Added
Description Caddy is an extensible server platform that uses TLS by default. From version 2.10.0 to before version 2.11.2, forward_auth copy_headers does not strip client-supplied headers, allowing identity injection and privilege escalation. This issue has been patched in version 2.11.2.
Title Caddy forward_auth copy_headers Does Not Strip Client-Supplied Headers, Allowing Identity Injection and Privilege Escalation
Weaknesses CWE-287
CWE-345
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-09T18:24:49.691Z

Reserved: 2026-03-05T21:27:35.341Z

Link: CVE-2026-30851

cve-icon Vulnrichment

Updated: 2026-03-09T17:58:59.189Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-07T17:15:52.540

Modified: 2026-03-11T13:06:25.083

Link: CVE-2026-30851

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-09T10:04:56Z

Weaknesses