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VULNERABILITIES

CVE-2026-36537 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:4.8 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CNA: CISA-ADPCVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://gist.github.com/KKC73/b9d4efda05693882f1e613c0e0fac78d CISA-ADPExploitRemedy
https://gist.github.com/KKC73/b9d4efda05693882f1e613c0e0fac78d [email protected]ExploitRemedy

Weakness Enumeration

CWE-IDCWE NameSource
CWE-290Authentication Bypass by SpoofingCISA-ADP

Affected Products

ProductVersions
ThingsBoard
<= 4.3.0.1

CPE

  • cpe:2.3:a:thingsboard:thingsboard:*:*:*:*:*:*:*:*

Remediation

  • Upgrade: 4.2.2.1moderate effort
  • Upgrade: 4.3.1.1moderate effort

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-36537
NVD Published Date:
Jun 15, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-36537 Details - Not Deferred