pypi · Malicious package advisory
Malwaremarshmellow
MAL-2026-864
Malicious code in marshmellow (PyPI)
Details
--- _-= Per source details. Do not edit below this line.=-_ ## Source: kam193 (dbf6f50353e6489a831a2575831b93fd5f99a9cbd60cc30260fd13838beda73f) Package is a typosquatting or dependency confusion attempt with a low-harm local-only action, like leaving a flag file. --- Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities. Campaign: GENERIC-local-typosquatting Reasons (based on the campaign): - dependency-confusion - The package overrides the install command in setup.py to execute malicious code during installation. - typosquatting ## Source: ossf-package-analysis (385a79bb53771282b64601f5a3b17f0d7a3d735efbf863584f0dd2755bc2bf08) The OpenSSF Package Analysis project identified 'marshmellow' @ 1.1.0 (pypi) as malicious. It is considered malicious because: - The package executes one or more commands associated with malicious behavior.
Compromised versions (2)
- 1.0.0
- 1.1.0
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.