Prototype Pollution in ThingsBoard Leads to Code Execution

Publication date: 2026-06-17

Last updated on: 2026-06-22

Assigner: JPCERT/CC

Description

ThingsBoard contains a prototype pollution vulnerability which may lead to arbitrary code execution within a sandboxed context by a user who can log in to the affected product with the tenant administrator privilege (TENANT_ADMIN).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-17

Last Modified

2026-06-22

Generated

2026-07-08

AI Q&A

2026-06-18

EPSS Evaluated

2026-07-06

NVD

CVE-2026-53676

EUVD

EUVD-2026-37828

Affected Vendors & Products

Vendor	Product	Version / Range
thingsboard	thingsboard	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-1321	The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

Attack-Flow Graph

Executive Summary

This vulnerability in ThingsBoard is a prototype pollution issue that allows a user with tenant administrator privileges to manipulate the prototype of objects. This manipulation can lead to arbitrary code execution within a sandboxed context.

Impact Analysis

The vulnerability can allow an attacker with tenant administrator access to execute arbitrary code within the sandboxed environment of ThingsBoard. This could lead to unauthorized actions, data compromise, or further exploitation within the affected system.

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