Vulnerability DatabaseCVE-2026-119128
Mend.io Vulnerability Database
The largest open source vulnerability database
What is a Vulnerability ID?
New vulnerability? Tell us about it!
CVE-2026-119128
Published:October 29, 2026
Updated:November 02, 2026
ZITADEL 4.0.0 before 4.19.5 contains an authentication bypass vulnerability in the Login V2 UI that allows unauthenticated attackers to set the first credential of users lacking any authentication method. Attackers can compute a valid verificationCheck cookie from the user ID and browser fingerprint to set a password, register a passkey, or link an identity provider, taking over the account.
Affected Packages
https://github.com/zitadel/zitadel.git (GITHUB):
Affected version(s) >=v4.0.0-rc.3 <v4.19.5
Fix Suggestion:
Update to version v4.19.5
Related Resources (4)
https://www.vulncheck.com/advisories/zitadel-4.0.0-before-4.19.5-login-v2-account-takeover-via-forgeable-verificationcheck-cookie
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119128.json
https://nvd.nist.gov/vuln/detail/CVE-2026-119128
https://github.com/zitadel/zitadel/security/advisories/GHSA-84fg-x5h4-w8xv
Do you need more information?
Contact Us
CVSS v4
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Reliance on Cookies without Validation and Integrity Checking
CWE-565
EPSS
Base Score:
0.29