What’s Vulnerable › Vulnerabilities

CVE-2021-23403: Prototype Pollution

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-02 · updated 2026-06-17
• Weakness: CWE-1321

Description

All versions of package ts-nodash are vulnerable to Prototype Pollution via the Merge() function due to lack of validation input.

Affected products

• ts-nodash: all versions

References

• https://github.com/BadOPCode/NoDash/blob/master/src/Merge.ts
• https://snyk.io/vuln/SNYK-JS-TSNODASH-1311009
• https://github.com/BadOPCode/NoDash/blob/master/src/Merge.ts
• https://snyk.io/vuln/SNYK-JS-TSNODASH-1311009

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