CVE-2021-40663
CRITICALCVSS 9.8/10EPSS 1.39%
Last modified
CVE-2021-40663 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. deep.assign npm package 0.0.0-alpha.0 is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').. EPSS estimates a 1.39% chance of exploitation in the next 30 days.
Description
deep.assign npm package 0.0.0-alpha.0 is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Deep.Assign Project | Deep.Assign | 0.0.0 | Alpha0 |
References
- https://github.com/janbialostok/deep-assign/issues/1Exploit, Issue Tracking, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220826-0002/Third Party Advisory
- https://www.npmjs.com/package/deep.assignProduct, Third Party Advisory
- https://github.com/janbialostok/deep-assign/issues/1Exploit, Issue Tracking, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220826-0002/Third Party Advisory
- https://www.npmjs.com/package/deep.assignProduct, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-40663?
deep.assign npm package 0.0.0-alpha.0 is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
How severe is CVE-2021-40663?
CVE-2021-40663 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.
How do I fix CVE-2021-40663?
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-2021-40663?
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Scan your code nowSource: NVD / NIST