PT-2026-49287 · Undefined · Undefined

Kkc73 · Published 2026-06-15 · Updated 2026-06-17 · CVE-2026-36537

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions ThingsBoard version 4.3.0.1

Description An authentication bypass exists 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, resulting in a complete account takeover. Over 14,000 devices were identified as potentially affected.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Authentication Bypass by Spoofing

Weakness Enumeration

CWE-290

Related Identifiers

CVE-2026-36537

Affected Products

Undefined

References · 3

• 🔥 https://gist.github.com/KKC73/b9d4efda05693882f1e613c0e0fac78d · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-36537 · Security Note
• https://twitter.com/fofabot/status/2067185927202676877 · Twitter Post