CVE-2021-23497: Prototype Pollution

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-02-04 · updated 2026-06-17
Weakness: CWE-1321

Description

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

Affected products

@strikeentco/set: before 1.0.2 — fixed in 1.0.2

How to fix

Upgrade to a fixed version: @strikeentco/set 1.0.2. Check the vendor advisory for mitigations.

References

https://github.com/strikeentco/set/commit/b2f942c
https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/
https://snyk.io/vuln/SNYK-JS-STRIKEENTCOSET-2385945
https://github.com/strikeentco/set/commit/b2f942c
https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/
https://snyk.io/vuln/SNYK-JS-STRIKEENTCOSET-2385945

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