What’s Vulnerable › Vulnerabilities

CVE-2020-7751: Prototype Pollution

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-10-26 · updated 2026-06-17
• Weakness: CWE-1321

Description

pathval before version 1.1.1 is vulnerable to prototype pollution.

Affected products

• pathval: before 1.1.1 — fixed in 1.1.1
• Npm Pathval: before 1.1.1 — fixed in 1.1.1

How to fix

Upgrade to a fixed version: pathval 1.1.1; Npm Pathval 1.1.1. Check the vendor advisory for mitigations.

References

• https://github.com/chaijs/pathval/pull/58/files
• https://snyk.io/vuln/SNYK-JS-PATHVAL-596926
• https://github.com/chaijs/pathval/pull/58/files
• https://snyk.io/vuln/SNYK-JS-PATHVAL-596926

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