Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
Sign in to view the affected projects.
No advisories yet.
Mon, 12 Oct 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | ZITADEL 3.0.0 before 4.18.0 Unauthenticated Username Change via Login V1 | |
| First Time appeared |
Zitadel
Zitadel zitadel |
|
| Weaknesses | CWE-306 | |
| CPEs | cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Zitadel
Zitadel zitadel |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-12T16:05:44.304Z
Reserved: 2026-10-12T14:23:25.691Z
Link: CVE-2026-109371
No data.
Status : Deferred
Published: 2026-10-12T17:17:34.547
Modified: 2026-10-12T17:17:34.700
Link: CVE-2026-109371
No data.
OpenCVE Enrichment
Updated: 2026-10-12T19:15:14Z