HIGHCVE-2026-30851Published Modified CNA GitHub_M
CVE-2026-30851: Caddy forward_auth copy_headers Does Not Strip Client-Supplied Headers, Allowing Identity Injection and Privilege Escalation
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.
Metrics
- CVSS v3.1
- 8.1
- Severity
- HIGH
- Fixed in
- —
- Affected Products
- 1
Affected packages
- caddyserver / caddy>= 2.10.0, < 2.11.2
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N