CVE-2021-3757
Prototype Pollution in immerjs/immer
CRITICAL
9.8
CVSS Score
Published: September 2, 2021 at 12:06 PM UTC
Updated: June 17, 2026 at 04:05 AM UTC
2 products affected across 2 vendorsImmerProject Immer
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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
Description
immer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
v ≤ 9.0.5
v ≤ 9.0.5
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://huntr.dev/bounties/23d38099-71cd-42ed-a77a-71e68094adfaCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-1321
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