VULNERABILITY INTELLIGENCE
CVE-2026-36537
CVSS score9.8 CRITICAL
EPSS probability0.51%
CISA KEVNot currently listed
Published2026-06-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
ThingsBoard v4.3.0.1 is vulnerable to an authentication bypass during the OAuth authorization code exchange. The application improperly trusts user-supplied identity data within the user parameter of the /login/oauth2/code/ endpoint. By manipulating the email address in this JSON object, a remote attacker can bypass authentication and gain full access to any existing user account on the platform without possessing the target user's credentials. This results in a complete account takeover.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-290