OpenSSF/OSV advisory MAL-2026-5249 confirms this npm version as malicious. The package was found to contain malicious code or consuming dependency that contains malicious code
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in eslint-plugin-executable-stories-vitest (npm)
Details
The package was found to contain malicious code or consuming dependency that contains malicious code
## Source: google-open-source-security (a6c7977dbc054cdb7fe56da0d2fbd26e2a6fed695deb4263ccbf4adfedd86acb) The Miasma malware is a self-propagating worm that spreads across the npm registry by abusing weaponized `binding.gyp` files to achieve execution during package installation, bypassing security tools that only inspect package lifecycle scripts. Upon execution, the malware attempts to exfiltrate credentials and OIDC tokens for various cloud and registry services, and propagates by compromising other packages managed by the stolen accounts or committing backdoor files to GitHub repositories.
Decision reason
OpenSSF Malicious Packages via OSV confirms eslint-plugin-executable-stories-vitest@2.1.8 as malicious (MAL-2026-5249): Malicious code in eslint-plugin-executable-stories-vitest (npm)