CVE-2026-119127

HighCVSS 8.1/10Last modified Nov 4, 2026

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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-640

Affected software

VendorProductVersions
zitadelzitadel>= 4.0.0, < 4.19.5

References

Timeline

Published
Oct 29, 2026
Last modified
Nov 4, 2026
NVD status
Deferred

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CVE-2026-119127: High severity, CVSS 8.1 | Vulnix