What’s Vulnerable › Vulnerabilities

CVE-2020-7778: Prototype Pollution

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-11-26 · updated 2026-06-17
• Weakness: CWE-78

Description

This affects the package systeminformation before 4.30.2. The attacker can overwrite the properties and functions of an object, which can lead to executing OS commands.

Affected products

• sebhildebrandt systeminformation: before 4.30.2 — fixed in 4.30.2

How to fix

Upgrade to a fixed version: sebhildebrandt systeminformation 4.30.2. Check the vendor advisory for mitigations.

References

• https://gist.github.com/EffectRenan/b434438938eed0b21b376cedf5c81e80
• https://github.com/sebhildebrandt/systeminformation/blob/master/lib/internet.js
• https://github.com/sebhildebrandt/systeminformation/commit/11103a447ab9550c25f1fbec7e6d903720b3fea8%23diff-970ae648187190f86bafc8f193b7538200eba164fad0674428b6487582c089cc
• https://github.com/sebhildebrandt/systeminformation/commit/73dce8d717ca9c3b7b0d0688254b8213b957f0fa%23diff-970ae648187190f86bafc8f193b7538200eba164fad0674428b6487582c089cc
• https://snyk.io/vuln/SNYK-JS-SYSTEMINFORMATION-1043753
• https://gist.github.com/EffectRenan/b434438938eed0b21b376cedf5c81e80
• https://github.com/sebhildebrandt/systeminformation/blob/master/lib/internet.js
• https://github.com/sebhildebrandt/systeminformation/commit/11103a447ab9550c25f1fbec7e6d903720b3fea8%23diff-970ae648187190f86bafc8f193b7538200eba164fad0674428b6487582c089cc
• https://github.com/sebhildebrandt/systeminformation/commit/73dce8d717ca9c3b7b0d0688254b8213b957f0fa%23diff-970ae648187190f86bafc8f193b7538200eba164fad0674428b6487582c089cc
• https://snyk.io/vuln/SNYK-JS-SYSTEMINFORMATION-1043753

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