{"answers":{"affected":"1 open source package ship an affected version, including osep-api-hub-service-client-v1.","exploited":"There is no known exploitation of MAL-2026-4633 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-2026-4633 is a malicious package in osep-api-hub-service-client-v1, published on 22 May 2026."},"fix_prompt":"MAL-2026-4633 is a malicious package: osep-api-hub-service-client-v1 (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-2026-4633/ (Markdown: https://insights.sbomify.com/MAL-2026-4633/index.md)","id":"MAL-2026-4633","markdown":"https://insights.sbomify.com/MAL-2026-4633/index.md","name":"MAL-2026-4633","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 `\"preinstall\": \"node index.js\"`, causing index.js to run automatically on `npm install`. index.js collects host identifiers — `os.hostname()`, `os.userInfo()` (username/uid/gid/shell), `os.homedir()`, `process.platform`, `process.arch`, `process.cwd()` — and additionally shells out via `child_process` to `whoami` and `id`. The collected JSON is POSTed to the hardcoded URL `https://0pqbxi1hplohnif3fa7tyc1at1zsnobd.oastify.com/detox56`, a Burp Collaborator (oastify.com) subdomain controlled by whoever published the package. The package name mimics an internal-sounding scoped client and ships with empty author/description metadata, consistent with a dependency-confusion attack targeting a private package namespace. Any developer or CI system that installs this package immediately leaks host and user identity to the attacker's Collaborator endpoint.","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 osep-api-hub-service-client-v1 (npm)","id":"MAL-2026-4633","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":"osep-api-hub-service-client-v1","purl":"pkg:npm/osep-api-hub-service-client-v1","source":"MAL-2026-4633"}],"products":null,"published":"2026-05-22","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-2026-4633/"}