The ini npm package before version 1.3.6 has a Prototype Pollution vulnerability.
If an attacker submits a malicious INI file to an application that parses it with ini.parse, they will pollute the prototype on the application. This can be exploited further depending on the context.
Patches
This has been patched in 1.3.6
Steps to reproduce
payload.ini
[__proto__]polluted = "polluted"
poc.js:
var fs = require('fs')</tr></table> ... (truncated)Affected versions: < 1.3.6
This version was pushed to npm by isaacs, a new releaser for ini since your current version.
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