CVE-2021-20066
MEDIUMCVSS 5.6/10EPSS 1.39%
Last modified
CVE-2021-20066 is a medium-severity vulnerability rated 5.6/10 on the CVSS scale. JSDom improperly allows the loading of local resources, which allows for local files to be manipulated by a malicious web page when script execution is enabled.. EPSS estimates a 1.39% chance of exploitation in the next 30 days.
Description
JSDom improperly allows the loading of local resources, which allows for local files to be manipulated by a malicious web page when script execution is enabled.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Jsdom Project | Jsdom | All versions |
References
- https://github.com/jsdom/jsdom/issues/3124#issuecomment-783502951Exploit, Issue Tracking, Third Party Advisory
- https://www.tenable.com/security/research/tra-2021-05Exploit, Third Party Advisory
- https://github.com/jsdom/jsdom/issues/3124#issuecomment-783502951Exploit, Issue Tracking, Third Party Advisory
- https://www.tenable.com/security/research/tra-2021-05Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20066?
JSDom improperly allows the loading of local resources, which allows for local files to be manipulated by a malicious web page when script execution is enabled.
How severe is CVE-2021-20066?
CVE-2021-20066 has a CVSS score of 5.6/10 (MEDIUM severity). The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20066?
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-2021-20066?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST