CVE 9.8 CRITICAL

CVE-2026-36537_CVE-2026-36537

June 16, 2026 invoker category_cve

9.8 / 10

CRITICAL

CVSS: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.

AI Analysis

Authentication bypass vulnerability in ThingsBoard v4.3.0.1 allowing remote attackers to gain full access to any existing user account without credentials

Basic Information

ID CVE-2026-36537

Source mitre

Published Jun 15, 2026 at 00:00

Modified Jun 16, 2026 at 13:19

Affected Product

Vendor ThingsBoard

Product ThingsBoard

Version 4.3.0.1

Affected Versions n/a n/a n/a

CWE Classification

CWE-290

AI Assessment

AI Score 9.8 / 10

AI Severity Critical

Vendor ThingsBoard

Product ThingsBoard

Version 4.3.0.1

References

gist.github.com /KKC73/b9d4efda05693882f1e613c0e0fac78d

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    "published": "2026-06-15T00:00:00.000Z",
    "modified": "2026-06-16T13:19:13.554Z",
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