What is CVE-2021-42750?

CVE-2021-42750 is a medium-severity vulnerability in Thingsboard, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-08-12.

How severe is CVE-2021-42750?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2021-42750 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Thingsboard

CVE-2021-42750

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 title of a rule node.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.025 (82.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Thingsboard — versions 3.3.1
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

karimhabush/cyberowl

References

cve@mitre.org (Product, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-42750?: CVE-2021-42750 is a medium-severity vulnerability in Thingsboard, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-08-12.
How severe is CVE-2021-42750?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2021-42750 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.