What’s Vulnerable › Vulnerabilities

CVE-2021-23448: Prototype Pollution

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-11 · updated 2026-06-17
• Weakness: CWE-1321

Description

All versions of package config-handler are vulnerable to Prototype Pollution when loading config files.

Affected products

• config-handler: 1.0.0

References

• https://github.com/jarradseers/config-handler/issues/1
• https://snyk.io/vuln/SNYK-JS-CONFIGHANDLER-1564947
• https://github.com/jarradseers/config-handler/issues/1
• https://snyk.io/vuln/SNYK-JS-CONFIGHANDLER-1564947

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