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yargs-parser@1.1.1-alpha2 vulnerabilities

the mighty option parser used by yargs

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Direct Vulnerabilities

Known vulnerabilities in the yargs-parser package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
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Prototype Pollution

yargs-parser is a mighty option parser used by yargs.

Affected versions of this package are vulnerable to Prototype Pollution. The library could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.

Our research team checked several attack vectors to verify this vulnerability:

  1. It could be used for privilege escalation.
  2. The library could be used to parse user input received from different sources:
    • terminal emulators
    • system calls from other code bases
    • CLI RPC servers

How to fix Prototype Pollution?

Upgrade yargs-parser to version 5.0.1, 13.1.2, 15.0.1, 18.1.1 or higher.

<5.0.1 >=6.0.0 <13.1.2 >=14.0.0 <15.0.1 >=16.0.0 <18.1.1
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