{"answers":{"affected":"1 open source package ship an affected version, including ethers-common.","exploited":"There is no known exploitation of MAL-2026-3707 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-2026-3707 is a malicious package in ethers-common, published on 13 May 2026."},"fix_prompt":"MAL-2026-3707 is a malicious package: ethers-common (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-2026-3707/ (Markdown: https://insights.sbomify.com/MAL-2026-3707/index.md)","id":"MAL-2026-3707","markdown":"https://insights.sbomify.com/MAL-2026-3707/index.md","name":"MAL-2026-3707","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 postinstall hook that base64-decodes the URL http://8.217.75.147:3000/payload, fetches it via curl over plain HTTP, and pipes the response directly into bash. This executes attacker-controlled code on every installer's machine at `npm install` time, with no integrity verification and an obfuscated (base64) destination. The package itself is a hollow lure: index.js exports an empty object, and the package name and description (\"Utilities for Web3/ethers development\") impersonate the well-known `ethers` Web3 library to bait installs. The combination of bare-IP C2, plain HTTP, base64-obfuscated URL, curl|bash dropper in a lifecycle hook, and an empty cover-story library is unambiguous supply-chain attack.\n\nThe OpenSSF Package Analysis project identified 'ethers-common' @ 1.0.0 (npm) as malicious.\n\nIt is considered malicious because:\n\n- The package executes one or more commands associated with malicious behavior.","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 ethers-common (npm)","id":"MAL-2026-3707","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":"ethers-common","purl":"pkg:npm/ethers-common","source":"MAL-2026-3707"}],"products":null,"published":"2026-05-13","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-2026-3707/"}