CVE-2021-42751

4.8 mediumEPSS 3.2%

Medium (4.8) in thingsboard thingsboard. EPSS 3.2% 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.

Severity

CVSS 3.1

4.8 medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS: 3.2% chance of exploitation in the next 30 days; higher than 88% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2022-08-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

thingsboard:thingsboard

References

https://github.com/thingsboard/thingsboard
https://packetstormsecurity.com/files/167999/Thingsboard-3.3.1-Cross-Site-Scripting.html
https://github.com/thingsboard/thingsboard
https://packetstormsecurity.com/files/167999/Thingsboard-3.3.1-Cross-Site-Scripting.html

Check your stack JSON