CVE-2026-30851

Name
CVE-2026-30851
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/caddyserver/caddy/issues/6610
security-advisories@github.com https://github.com/caddyserver/caddy/pull/6608
security-advisories@github.com https://github.com/caddyserver/caddy/pull/7545
security-advisories@github.com https://github.com/caddyserver/caddy/security/advisories/GHSA-7r4p-vjf4-gxv4

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:* caddy >= 2.10.0 < 2.11.2

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
caddy edge-community 2.11.2-r0 Michał Polański <michal@polanski.me> fixed
caddy edge-community 2.11.1-r0 Michał Polański <michal@polanski.me> possibly vulnerable
caddy edge-community 2.10.2-r4 Michał Polański <michal@polanski.me> possibly vulnerable
caddy edge-community 2.10.2-r3 Michał Polański <michal@polanski.me> possibly vulnerable
caddy edge-community 2.10.2-r2 Michał Polański <michal@polanski.me> possibly vulnerable
caddy edge-community 2.10.2-r1 Michał Polański <michal@polanski.me> possibly vulnerable
caddy edge-community 2.10.2-r0 Michał Polański <michal@polanski.me> possibly vulnerable
caddy edge-community 2.10.0-r3 Michał Polański <michal@polanski.me> possibly vulnerable
caddy edge-community 2.10.0-r2 Michał Polański <michal@polanski.me> possibly vulnerable
caddy edge-community 2.10.0-r1 Michał Polański <michal@polanski.me> possibly vulnerable
caddy edge-community 2.10.0-r0 Michał Polański <michal@polanski.me> possibly vulnerable
caddy 3.23-community 2.11.2-r0 Michał Polański <michal@polanski.me> fixed
caddy 3.23-community 2.10.2-r5 Michał Polański <michal@polanski.me> possibly vulnerable
caddy 3.23-community 2.10.2-r4 Michał Polański <michal@polanski.me> possibly vulnerable
caddy 3.23-community 2.10.2-r3 Michał Polański <michal@polanski.me> possibly vulnerable
caddy 3.23-community 2.10.2-r2 Michał Polański <michal@polanski.me> possibly vulnerable