CVE-2021-3757
CriticalPublic PoC
Published: 02 September 2021
Published
02 September 2021
Modified
21 November 2024
KEV Added
—
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
0.0045
64.1th percentile
Risk Priority
20
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-3757 is a critical-severity Prototype Pollution (CWE-1321) vulnerability in Immer Project Immer. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 35.9% 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-2021-2031
Vulnerability details
immer 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
immer project
immer
≤ 9.0.5
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.