CVE-2021-40663
CriticalPublic PoC
Published: 30 June 2022
Published
30 June 2022
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0050
66.4th percentile
Risk Priority
20
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-40663 is a critical-severity Prototype Pollution (CWE-1321) vulnerability in Deep.Assign Project Deep.Assign. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 33.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-6215
Vulnerability details
deep.assign npm package 0.0.0-alpha.0 is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
deep.assign project
deep.assign
0.0.0
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.