{"answers":{"affected":"1 open source package ship an affected version, including cloudsmith-vsc.","exploited":"There is no known exploitation of MAL-2026-4530 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-2026-4530 is a malicious package in cloudsmith-vsc, published on 21 May 2026."},"fix_prompt":"MAL-2026-4530 is a malicious package: cloudsmith-vsc (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-2026-4530/ (Markdown: https://insights.sbomify.com/MAL-2026-4530/index.md)","id":"MAL-2026-4530","markdown":"https://insights.sbomify.com/MAL-2026-4530/index.md","name":"MAL-2026-4530","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"package.json declares a preinstall hook (`\"preinstall\": \"node index.js\"`) that runs automatically on `npm install`. index.js reads installer-side system identity and files — `os.hostname()`, `os.userInfo()`, homedir, DNS configuration, package metadata, `/etc/passwd`, and `/etc/hosts` — and POSTs them over HTTPS to a hardcoded Burp Collaborator subdomain (`6hoa7n94q5v6yig1hqokwg6f066zupie.oastify.com`). The package metadata is empty (no description, author, or license) and the name impersonates the Cloudsmith vendor brand, consistent with a dependency-confusion / typosquat recon-and-exfil payload. Any machine that installs this package transmits host fingerprinting and local account data to the attacker.","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 cloudsmith-vsc (npm)","id":"MAL-2026-4530","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":[],"last_affected":[],"package":"cloudsmith-vsc","purl":"pkg:npm/cloudsmith-vsc","source":"MAL-2026-4530"}],"products":null,"published":"2026-05-21","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-2026-4530/"}