{"answers":{"affected":"1 open source package ship an affected version, including npmjs_web3-util.","exploited":"There is no known exploitation of MAL-2026-3768 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-2026-3768 is a malicious package in npmjs_web3-util, published on 14 May 2026."},"fix_prompt":"MAL-2026-3768 is a malicious package: npmjs_web3-util (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-2026-3768/ (Markdown: https://insights.sbomify.com/MAL-2026-3768/index.md)","id":"MAL-2026-3768","markdown":"https://insights.sbomify.com/MAL-2026-3768/index.md","name":"MAL-2026-3768","record":{"aliases":["GHSA-qjvc-v9v6-xh96"],"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` lifecycle hook downloads a script from a personal GitHub Gist (`gist.githubusercontent.com/guellemilb/631fb6348967d9d475125edf67048c0e/raw/build_utils.py`) via curl/wget and pipes the response to `python3`, `node`, and `eval` — with fallback chains across all three interpreters. The Gist URL is mutable (the gist owner can change the served content at any time without any package republish), is unrelated to the package's advertised publisher, performs no hash or signature verification on the fetched bytes, and runs unconditionally on every `npm install`. The package otherwise provides no functionality: `index.js` is `module.exports = {};` despite the package describing itself as \"Utilities for Web3/web3 development\" — the dropper is the package's only effect. The name (`npmjs_web3-util`) and web3-themed keywords appear crafted to attract developers searching for web3 utility packages, making this a typosquat-style lure whose payload is the remote-fetch-and-execute chain.\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 npmjs_web3-util (npm)","id":"MAL-2026-3768","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":"npmjs_web3-util","purl":"pkg:npm/npmjs_web3-util","source":"MAL-2026-3768"}],"products":null,"published":"2026-05-14","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-2026-3768/"}