CVE-2021-42750
MEDIUMCVSS 4.8/10EPSS 2.33%
Last modified
CVE-2021-42750 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. 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.. EPSS estimates a 2.33% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Thingsboard | Thingsboard | 3.3.1 |
References
- https://github.com/thingsboard/thingsboardProduct, Third Party Advisory
- https://packetstormsecurity.com/files/167999/Thingsboard-3.3.1-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
- https://github.com/thingsboard/thingsboardProduct, Third Party Advisory
- https://packetstormsecurity.com/files/167999/Thingsboard-3.3.1-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2021-42750?
CVE-2021-42750 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 2.33% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42750?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-42750?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST