Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/zitadel/zitadel/security/advisories/GHSA-mchc-246r-6m76
- https://www.vulncheck.com/advisories/zitadel-4.0.0-before-4.19.5-account-takeove
FAQ
What is CVE-2026-119127?
CVE-2026-119127 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 su...
How severe is CVE-2026-119127?
CVE-2026-119127 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-119127?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.