What is GHSA-2464-29qv-3mj7?

GHSA-2464-29qv-3mj7 is a security advisory published by GitHub Security Advisories with High severity. ZITADEL 3.0.0 before 4.18.0 contains a missing authentication vulnerability in the hosted Login...

Which CVE IDs does GHSA-2464-29qv-3mj7 cover?

GHSA-2464-29qv-3mj7 covers the following CVE IDs: CVE-2026-109371. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-2464-29qv-3mj7?

GHSA-2464-29qv-3mj7 has a CVSS v3 base score of 8.2, published by GitHub Security Advisories.

GHSA-2464-29qv-3mj7HighCVSS 8.2

ZITADEL 3.0.0 before 4.18.0 contains a missing authentication vulnerability in the hosted Login...

Vendor

GitHub Security Advisories

Published

October 12, 2026

Last Modified

October 12, 2026

🔗 CVE IDs covered (1)

CVE-2026-109371 →

📋 Description

ZITADEL 3.0.0 before 4.18.0 contains a missing authentication vulnerability in the hosted Login V1 UI, where the change-username handler acts on the account bound to a login flow before any factor is verified. Unauthenticated attackers can submit a victim's login name and then post a new username to rename any active human user, including administrators, locking them out.

🔗 References (4)

https://github.com/zitadel/zitadel/security/advisories/GHSA-4hgj-wm6c-q7p2
https://nvd.nist.gov/vuln/detail/CVE-2026-109371
https://www.vulncheck.com/advisories/zitadel-3.0.0-before-4.18.0-unauthenticated-username-change-via-login-v1
https://github.com/advisories/GHSA-2464-29qv-3mj7