eslint-helper-1

{"modified":"2026-06-23T13:18:44Z","published":"2026-06-19T03:59:03Z","schema_version":"1.7.4","id":"MAL-2026-6188","aliases":["GHSA-35c7-535m-jhv6"],"summary":"Malicious code in eslint-helper-1 (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (cfadd6e70cf70ee03d7aae8bfcaa916d29073c5e09ca614bfcb4538c3efc1832)\nPackage masquerades as an ESLint helper but contains code in index.js that decodes base64 blobs through Buffer.from(..., 'base64').toString() and pipes the resulting strings into execSync('bash...') and execSync('zsh...'). This is the canonical obfuscated-shell-dropper shape: hidden payload bytes are reconstituted at runtime and handed to a shell interpreter, giving the author arbitrary command execution on the installer's machine. The name (eslint-helper-1) and lack of any legitimate ESLint integration are consistent with a typosquat / brand-impersonation lure for a credential-stealing or remote-execution payload.\n\n## Source: ghsa-malware (23672dd67920b4f2b3f8b38573128757ad0ee885cd0e9c35a2e0b3c2e4258f0e)\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.\n","affected":[{"package":{"ecosystem":"npm","name":"eslint-helper-1"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"versions":["5.0.4"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"},{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"index.js","sha256":"417f814a3838ff76700a5fec27c2a50ff4e8785e96556669448a5d252ac5fed7","tlsh":"4fe166a901162126d6f1e7f8eb560016f7ded2137202c742b6ac4ac92f77528e1d2fec"}],"package_integrity":[{"filename":"eslint-helper-1-5.0.4.tgz","hashes":{"sha1":"3778147696b0f533b0fd61d26d1eefce31f0d212","sha512_sri":"sha512-zhGVI/O1ntBOjasIyxNGf5651zIrH+hwNlheD1JtDlRf6xfTf66jjpfE5bHGTDyEPdj26NOM4/w3kjc7wsmhcw=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/eslint-helper-1/v/5.0.4"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-35c7-535m-jhv6"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"source":"amazon-inspector","sha256":"cfadd6e70cf70ee03d7aae8bfcaa916d29073c5e09ca614bfcb4538c3efc1832","import_time":"2026-06-19T05:16:48.362267462Z","id":"IN-MAL-2026-007043","modified_time":"2026-06-19T03:59:03Z","versions":["5.0.4"]},{"source":"ghsa-malware","sha256":"23672dd67920b4f2b3f8b38573128757ad0ee885cd0e9c35a2e0b3c2e4258f0e","import_time":"2026-06-23T13:16:55.898887665Z","id":"GHSA-35c7-535m-jhv6","modified_time":"2026-06-23T12:15:37Z","ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}]}]}}