npm

insomnia-plugin-poc-m4gester2 @1.0.1

Vulnerability report · Last retrieved from osv.dev June 28, 2026 at 8:53 AM UTC

Malicious

OSV ID

MAL-2026-6553

Ecosystem

npm

Summary

Package ships only a package.json with no plugin code, declaring a postinstall lifecycle script that runs echo PWNED_BY_DEEPLINK > /tmp/pwned.txt on every npm install . This writes a marker file to the installer's filesystem and demonstrates arbitrary command execution at install time. The package name self-identifies as a proof-of-concept ( poc-m4gester ) and adopts the insomnia-plugin-* namespace despite shipping no Insomnia plugin functionality. While the current payload is a benign marker write, the postinstall is an arbitrary-shell-on-install primitive with no legitimate purpose, in a namespace-squat shell of a package.

Source: amazon-inspector (1b2b63f22e7d0d8f23c608a3c109163e06e2bd6a1dd716305e0d8adaf6be6b86)

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