CVE-2026-30851
Caddy forward_auth copy_headers allows Identity Injection and Privilege Escalation in github.com/caddyserver/caddy
8.1
HIGH
CVSS 3.1
EPSS 0.02%
Description
Caddy forward_auth copy_headers Does Not Strip Client-Supplied Headers, Allowing Identity Injection and Privilege Escalation in github.com/caddyserver/caddy
How to fix CVE-2026-30851
To remediate CVE-2026-30851, upgrade the affected package to a fixed version below.
- Go/github.com/caddyserver/caddy/v2—upgrade to 2.11.2 or later
- —upgrade to 2.11.2 or later
Is CVE-2026-30851 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 2.10.0, < 2.11.2
- >= 2.10.0, < 2.11.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |