{"answers":{"affected":"1 open source package ship an affected version, including chainutils.","exploited":"There is no known exploitation of MAL-2026-2820 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-2026-2820 is a malicious package in chainutils, published on 16 Apr 2026."},"fix_prompt":"MAL-2026-2820 is a malicious package: chainutils (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-2026-2820/ (Markdown: https://insights.sbomify.com/MAL-2026-2820/index.md)","id":"MAL-2026-2820","markdown":"https://insights.sbomify.com/MAL-2026-2820/index.md","name":"MAL-2026-2820","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"During import, package triggers malicious code. First, it ensures persistency e.g., through the autostart registry key. Then, based on the encrypted config, an exfiltration demon is started. It registeres the instance in the C2 server and starts searching the file system looking for files matching given filename patterns and then monitoring changes. Discovered files are exfiltrated to a hardcoded remote target.\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\nCampaign: 2026-04-genosys\n\nReasons (based on the campaign):\n\n - files-exfiltration\n\n - peristence-autorun\n\n - obfuscation\n\n - The malicious code is intentionally included in a dependency of the package\n\n - exfiltration-credentials\n\n - persistence\n\n - crypto-related","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 chainutils (PyPI)","id":"MAL-2026-2820","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":"chainutils","purl":"pkg:pypi/chainutils","source":"MAL-2026-2820"}],"products":null,"published":"2026-04-16","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-2026-2820/"}