CVE-2021-21297
7.7 · HIGHOverview
CVE-2021-21297 is a high-severity vulnerability affecting nodered node-red. It was published on February 26, 2021 and has a CVSS 3.1 base score of 7.7 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Node-Red is a low-code programming for event-driven applications built using nodejs. Node-RED 1.2.7 and earlier contains a Prototype Pollution vulnerability in the admin API. A badly formed request can modify the prototype of the default JavaScript Object with the potential to affect the default behaviour of the Node-RED runtime. The vulnerability is patched in the 1.2.8 release. A workaround is to ensure only authorized users are able to access the editor url.
Remediation
Check the references section for vendor advisories and patches from nodered. Update node-red to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| nodered | node-red | >= 0, < 1.2.8 | Affected |
References
Frequently Asked Questions
What is CVE-2021-21297?
CVE-2021-21297 is a high-severity vulnerability affecting nodered node-red. It was published on February 26, 2021 and has a CVSS 3.1 base score of 7.7 (HIGH).
How severe is CVE-2021-21297?
This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-21297?
Check the references section for vendor advisories and patches from nodered. Update node-red to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-21297?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-21297 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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