CVE-2021-42751: Thingsboard

Medium severity, CVSS 4.8. EPSS: 3.1% chance of exploitation in the next 30 days.

A cross-site scripting (XSS) vulnerability in Rule Engine in ThingsBoard 3.3.1 allows remote attackers (with administrative access) to inject arbitrary JavaScript within the description of a rule node.

Affected products

• Thingsboard Thingsboard: version 3.3.1 only

Published 2022-08-12. Last modified 2026-06-17.