What’s Vulnerable › Vulnerabilities

CVE-2021-23397: Prototype Pollution

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-07-25 · updated 2026-06-17
• Weakness: CWE-1321

Description

All versions of package @ianwalter/merge are vulnerable to Prototype Pollution via the main (merge) function. Maintainer suggests using @generates/merger instead.

Affected products

• @ianwalter/merge: all versions

References

• https://security.snyk.io/vuln/SNYK-JS-IANWALTERMERGE-1311022
• https://security.snyk.io/vuln/SNYK-JS-IANWALTERMERGE-1311022

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