Prototype Pollution in Immerjs Immerjs/immer
CVE-2021-3757
immer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Vulnerability class: Prototype Pollution
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.017 (75.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Immerjs Immerjs/immer — versions unspecified
- Immer Project
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237 (Patch, Third Party Advisory)
- huntr.dev/bounties/23d38099-71cd-42ed-a77a-71e68094adfa (Exploit, Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2021-3757?
- CVE-2021-3757 is a critical-severity vulnerability in Immerjs Immerjs/immer, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 9.8/10. Published 2021-09-02.
- How severe is CVE-2021-3757?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-3757 known to be exploited?
- 18 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.