marshmellow

{"modified":"2026-02-19T22:47:48Z","published":"2026-02-12T07:10:57Z","schema_version":"1.7.4","id":"MAL-2026-864","summary":"Malicious code in marshmellow (PyPI)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (dbf6f50353e6489a831a2575831b93fd5f99a9cbd60cc30260fd13838beda73f)\nPackage is a typosquatting or dependency confusion attempt with a low-harm local-only action, like leaving a flag file.\n\n\n---\n\nCategory: 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.\n\n\nCampaign: GENERIC-local-typosquatting\n\n\nReasons (based on the campaign):\n\n\n - dependency-confusion\n\n\n - The package overrides the install command in setup.py to execute malicious code during installation.\n\n\n - typosquatting\n\n## Source: ossf-package-analysis (385a79bb53771282b64601f5a3b17f0d7a3d735efbf863584f0dd2755bc2bf08)\nThe OpenSSF Package Analysis project identified 'marshmellow' @ 1.1.0 (pypi) as malicious.\n\nIt is considered malicious because:\n\n- The package executes one or more commands associated with malicious behavior.\n","affected":[{"package":{"ecosystem":"PyPI","name":"marshmellow"},"versions":["1.0.0","1.1.0"]}],"references":[{"type":"WEB","url":"https://bad-packages.kam193.eu/pypi/package/marshmellow"}],"credits":[{"name":"Kamil Mańkowski (kam193)","type":"REPORTER","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"]},{"name":"OpenSSF: Package Analysis","type":"FINDER","contact":["https://github.com/ossf/package-analysis","https://openssf.slack.com/channels/package_analysis"]}],"database_specific":{"malicious-packages-origins":[{"source":"kam193","sha256":"dbf6f50353e6489a831a2575831b93fd5f99a9cbd60cc30260fd13838beda73f","import_time":"2026-02-12T09:22:04.906442978Z","id":"pypi/GENERIC-local-typosquatting/marshmellow","modified_time":"2026-02-12T08:43:45.578698Z","versions":["1.0.0","1.1.0"]},{"source":"ossf-package-analysis","sha256":"385a79bb53771282b64601f5a3b17f0d7a3d735efbf863584f0dd2755bc2bf08","import_time":"2026-02-19T22:45:34.187993225Z","modified_time":"2026-02-12T07:27:12Z","versions":["1.1.0"]},{"source":"ossf-package-analysis","sha256":"f4aaf04cc47fc8c3690dc509c889e05ca1a17673a00bf32579c76b629c6b58c5","import_time":"2026-02-19T22:45:34.068136728Z","modified_time":"2026-02-12T07:10:57Z","versions":["1.0.0"]}]}}