{"id":"MAL-2026-6120","summary":"Malicious code in @caspianph/storyteller (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (3bd24daaa395f2e6bfae7c6e6f488a6e114b87e2606ec1bce7dcd4ab6a92f40a)\nThe package ships setup.cjs containing heavily obfuscated JavaScript with hex-mangled identifiers (_0x32549a, _0x4b2b44, _0x78c349, _0x119ac2) typical of payload-hiding techniques. A file named setup.cjs in an npm package is structurally positioned to be invoked from a lifecycle hook (preinstall/install/postinstall) or required at module load. Legitimate npm packages do not obfuscate their install-time code; obfuscation in this position is overwhelmingly used to hide network beacons, credential reads, or dropper logic from casual inspection.\n","modified":"2026-06-18T17:16:47.434528599Z","published":"2026-06-18T16:09:47Z","database_specific":{"malicious-packages-origins":[{"source":"amazon-inspector","versions":["1.1.13"],"id":"IN-MAL-2026-006986","import_time":"2026-06-18T17:08:46.248534627Z","modified_time":"2026-06-18T16:09:47Z","sha256":"3bd24daaa395f2e6bfae7c6e6f488a6e114b87e2606ec1bce7dcd4ab6a92f40a"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/@caspianph/storyteller/v/1.1.13"}],"affected":[{"package":{"name":"@caspianph/storyteller","ecosystem":"npm","purl":"pkg:npm/%40caspianph%2Fstoryteller"},"versions":["1.1.13"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"package_integrity":[{"hashes":{"sha1":"10c76ebce0ae839094ffa71d324b9fcc8ce47f3f","sha512_sri":"sha512-qxi4fUIsvUjqtIAZMj9lNGbxEt3jAVH9UO346sNBzYr6XXB2QFBmbcgA+16WFBZrXsEg0Uet+7aofKnUweGlmg=="},"filename":"storyteller-1.1.13.tgz"}],"evidence_files":[{"tlsh":"8da1835d2be5f491075a46a3312be0dae48b8c26b7168dccac00af787e84375e685d35","path":"setup.cjs","sha256":"6d74592e95cfaa3c8a34d6bf87a7ca5a0cb46d4503f7a0f53880fbc0e55534e2"}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@caspianph/storyteller/MAL-2026-6120.json"}}],"schema_version":"1.7.5","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}