What’s Vulnerable › Vulnerabilities

CVE-2020-28441: 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: 2022-07-25 · updated 2026-06-17
• Weakness: CWE-1321

Description

This affects the package conf-cfg-ini before 1.2.2. If an attacker submits a malicious INI file to an application that parses it with decode, they will pollute the prototype on the application. This can be exploited further depending on the context.

Affected products

• conf-cfg-ini: before 1.2.2 — fixed in 1.2.2

How to fix

Upgrade to a fixed version: conf-cfg-ini 1.2.2. Check the vendor advisory for mitigations.

References

• https://github.com/loge5/conf-cfg-ini/commit/3a88a6c52c31eb6c0f033369eed40aa168a636ea
• https://security.snyk.io/vuln/SNYK-JS-CONFCFGINI-1048973
• https://github.com/loge5/conf-cfg-ini/commit/3a88a6c52c31eb6c0f033369eed40aa168a636ea
• https://security.snyk.io/vuln/SNYK-JS-CONFCFGINI-1048973

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