CVE-2026-53676 | ThingsBoard contains a prototype pollution vulnerability whi… | CVSS 8.6 HIGH

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).

Metadata

CVE ID: CVE-2026-53676
State: PUBLISHED
Assigner: jpcert
Reserved: 2026-06-10 01:16 UTC
Published: 2026-06-17 22:53 UTC
Last updated: 2026-06-17 22:53 UTC
Primary CWE: CWE-1321
Improperly controlled modification of object prototype attri…
Vendor / Product: ThingsBoard / ThingsBoard
Sources: cve.org · NVD

Severity & Metrics

8.6 HIGH CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products (1)

Vendor	Product	Platform	Versions
ThingsBoard	ThingsBoard	—	prior to v4.3.1.2

Weakness (CWE)

CWE	Source	Description
CWE-1321	cna	Improperly controlled modification of object prototype attributes ('Prototype Pollution')

CVSS scores (2)

Score	Severity	Version	Source	Vector
8.6	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.2	HIGH	3.0	cna	CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References (3)