Description


ZITADEL 4.0.0 before 4.19.5 contains a host header injection vulnerability in the Login V2 UI that allows unauthenticated attackers to poison password-reset, invite, and email-verification links by supplying untrusted x-zitadel-public-host, x-zitadel-forward-host, or x-forwarded-host headers. Attackers knowing a victim's login name can point the links in genuine emails at their host, harvest the single-use codes when the links are opened, and take over accounts including instance administrators.

Related CPE's


Could not find any relations

Weaknesses



CWE-640

CVSS impact metrics


CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

8.1 · High

Information


Source identifier

[email protected]

Vulnerability status

Deferred

Published

2026-10-29T16:18:05.487Z

14 hours ago

Last modified

2026-10-29T16:18:05.603Z

14 hours ago