Prototype Pollution Vulnerability in ThingsBoard by ThingsBoard Inc.
CVE-2026-53676

8.6HIGH

Key Information:

Vendor

Thingsboard

Status
Thingsboard
Vendor
CVE Published:
17 June 2026

What is CVE-2026-53676?

ThingsBoard contains a prototype pollution vulnerability that affects tenant administrators with the ability to log in to the system. This flaw may enable attackers to execute arbitrary code within a sandboxed context. Organizations using affected versions should assess their exposure and ensure that proper security measures are in place to mitigate potential risks.

Affected Version(s)

ThingsBoard prior to v4.3.1.2

References

https://thingsboard.io/docs/releases/releases-table/
https://github.com/thingsboard/thingsboard/pull/15600
https://jvn.jp/en/jp/JVN16937365/

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

CVSS V3.0

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.