CVE-2026-30851

PoC —

CVSS 3.1

8.8 high

EPSS

<1%p16

Published

Mar 7, 2026 (Mar 7, 2026)

Modified

Jun 17, 2026

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.

Vendors: caddyserver
Products: caddy
Weakness: CWE-287, CWE-345
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.2%)

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