{"answers":{"affected":"1 open source package ship an affected version, including event-hunter.","exploited":"There is no known exploitation of MAL-2026-16478 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-2026-16478 is a malicious package in event-hunter, published on 23 Sep 2026."},"fix_prompt":"MAL-2026-16478 is a malicious package: event-hunter (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-2026-16478/ (Markdown: https://insights.sbomify.com/MAL-2026-16478/index.md)","id":"MAL-2026-16478","markdown":"https://insights.sbomify.com/MAL-2026-16478/index.md","name":"MAL-2026-16478","record":{"aliases":[],"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`, the declared postinstall hook runs `node index.js`, which reads `os.hostname()` and a timestamp, base64-encodes the JSON payload, and issues an HTTPS GET to `https://estimator-nemeses-unwatched.ngrok-free.dev/canary?d=\u003cbase64\u003e`. The destination is a hardcoded ngrok tunnel unrelated to any registry or vendor infrastructure, and the beacon fires automatically without any caller action or opt-in. The package's own metadata describes it as a `Dependency Confusion to RCE` proof-of-concept, and the install-time callback carries the installer's internal hostname to an external third party.","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 event-hunter (npm)","id":"MAL-2026-16478","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":"event-hunter","purl":"pkg:npm/event-hunter","source":"MAL-2026-16478"}],"products":null,"published":"2026-09-23","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-2026-16478/"}