What is CVE-2021-23497?

CVE-2021-23497 is a high-severity vulnerability in Set Project, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 7.5/10. Published 2022-02-04.

How severe is CVE-2021-23497?

High severity. CVSS v3 base score is 7.5 out of 10.

Prototype Pollution in Set Project

CVE-2021-23497

This affects the package @strikeentco/set before 1.0.2. It allows an attacker to cause a denial of service and may lead to remote code execution. **Note:** This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-STRIKEENTCOSET-1038821

Vulnerability class: Prototype Pollution

Published 2022-02-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.037 (89.5th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.037 · newest: 0.037 · change: 0.000

Affected products

Set Project
@Strikeentco/set — versions unspecified

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

References

snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/ (Not Applicable)
snyk.io/vuln/SNYK-JS-STRIKEENTCOSET-2385945 (Exploit, Third Party Advisory)
github.com/strikeentco/set/commit/b2f942c (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-23497?: CVE-2021-23497 is a high-severity vulnerability in Set Project, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 7.5/10. Published 2022-02-04.
How severe is CVE-2021-23497?: High severity. CVSS v3 base score is 7.5 out of 10.