CVE-2021-21422
8.1 · HIGHOverview
CVE-2021-21422 is a high-severity vulnerability affecting mongo-express_project mongo-express. It was published on June 21, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
mongo-express is a web-based MongoDB admin interface, written with Node.js and express. 1: As mentioned in this issue: https://github.com/mongo-express/mongo-express/issues/577, when the content of a cell grows larger than supported size, clicking on a row will show full document unescaped, however this needs admin interaction on cell. 2: Data cells identified as media will be rendered as media, without being sanitized. Example of different renders: image, audio, video, etc. As an example of type 1 attack, an unauthorized user who only can send a large amount of data in a field of a document may use a payload with embedded javascript. This could send an export of a collection to the attacker without even an admin knowing. Other types of attacks such as dropping a database\collection are possible.
Remediation
Check the references section for vendor advisories and patches from mongo-express_project. Update mongo-express 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 |
|---|---|---|---|
| mongo-express_project | mongo-express | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2021-21422?
CVE-2021-21422 is a high-severity vulnerability affecting mongo-express_project mongo-express. It was published on June 21, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2021-21422?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-21422?
Check the references section for vendor advisories and patches from mongo-express_project. Update mongo-express 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-2021-21422?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-21422 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.
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