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CVE-2021-3757
Prototype Pollution in immerjs/immer
High7.5EPSS 1.7%
- Published
- Updated
- Reserved
- Assigned by
- @huntrdev
Description
immer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| @huntrdevCNA (assigner) | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.7% · top 23% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
- affected unspecified – ≤ 9.0.5
Affected packages
From reviewed advisories of the GitHub Advisory Database.
References (2)
- https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237 (opens in a new tab)x_refsource_MISCx_transferred
- https://huntr.dev/bounties/23d38099-71cd-42ed-a77a-71e68094adfa (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-c36v-fmgq-m8hx (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-3757)Record last updated .