{"answers":{"affected":"1 open source package ship an affected version, including core-js-gns.","exploited":"There is no known exploitation of MAL-2026-14175 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-2026-14175 is a malicious package in core-js-gns, published on 19 Aug 2026."},"fix_prompt":"MAL-2026-14175 is a malicious package: core-js-gns (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-2026-14175/ (Markdown: https://insights.sbomify.com/MAL-2026-14175/index.md)","id":"MAL-2026-14175","markdown":"https://insights.sbomify.com/MAL-2026-14175/index.md","name":"MAL-2026-14175","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package's postinstall hook (`package.json` → `node init.js`) runs an installer-side dropper. init.js gates on developer-machine heuristics (presence of Desktop/Documents/Downloads directories) and a 24-hour skip marker, then POSTs hostname, username, platform, architecture, Node version, OS release, and package name/version to https://core-js-buffer.domaup-com.workers.dev/report. It then HTTP GETs an AES-256-GCM ciphertext from the same host with TLS verification disabled (`rejectUnauthorized: false`), decrypts it with a key derived from a hardcoded seed, checks the plaintext contains the cover-story string `TelemetrySender`, writes the result to `~/.cache/core-js-buffer/modules/runtime.py`, and spawns Python detached (`stdio:'ignore'`, `.unref()`) to execute it. The package name mimics the legitimate `core-js` library. Behavior is arbitrary remote code execution on the installer's machine, fetched from an attacker-controlled endpoint at npm install time, preceded by installer identifier exfiltration to the same 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 core-js-gns (npm)","id":"MAL-2026-14175","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":"core-js-gns","purl":"pkg:npm/core-js-gns","source":"MAL-2026-14175"}],"products":null,"published":"2026-08-19","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-2026-14175/"}