bytepack-probe-a7x3

{"modified":"2026-09-21T20:18:32Z","published":"2026-09-21T19:51:34Z","schema_version":"1.7.4","id":"MAL-2026-16364","summary":"Malicious code in bytepack-probe-a7x3 (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (1f158536e9d84e6cee18e2a3ce84869e34f1564ec18a1313a9e8c03b304e3d70)\npackage.json declares a dependency `leak-internal` whose source is the HTTPS tarball URL https://src-ssrf.bytedance.net/ssrf/probe.tgz rather than a registry version range. On `npm install`, npm fetches and installs whatever bytes that URL currently returns, executing any lifecycle scripts contained in the fetched tarball. There is no version pin, no integrity hash, and no signature check, so the code executed on the installer's machine is whatever the operator of that host serves at the moment of install. The hostname suggests an SSRF-probe artifact hosted on an internal-looking domain, and the dependency name `leak-internal` together with the path segment `ssrf/probe.tgz` indicates the fetched payload is intended to run probing behavior inside the installer's network.\n","affected":[{"package":{"ecosystem":"npm","name":"bytepack-probe-a7x3"},"versions":["1.0.0","1.0.1"],"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":"package.json","sha256":"b49e1d6fa52faa1bbf085825565dde6df4b3ac8dedbbd1f90e4300ef81c0a60c","tlsh":"cae07d20d6141c3334dc04f429f20147bd73cc3f40aab9086387522885ce56735f830c"}],"package_integrity":[{"filename":"bytepack-probe-a7x3-1.0.0.tgz","hashes":{"sha1":"843c6abc35dc90ce1697fdbb21276ad19cd73d3d","sha512_sri":"sha512-hCER5zYht/CVBROJpMQHf0UXjdbCR0ZaWKiVgulHtRwgFTyQUUmrT5D5jarzyCZN8GgmPkAkzKM8T1p47TRABA=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/bytepack-probe-a7x3/v/1.0.0"},{"type":"PACKAGE","url":"https://www.npmjs.com/package/bytepack-probe-a7x3/v/1.0.1"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-020275","import_time":"2026-09-21T20:17:15.608358975Z","modified_time":"2026-09-21T19:51:34Z","sha256":"1f158536e9d84e6cee18e2a3ce84869e34f1564ec18a1313a9e8c03b304e3d70","source":"amazon-inspector","versions":["1.0.0"]},{"id":"IN-MAL-2026-020276","import_time":"2026-09-21T20:17:15.645420764Z","modified_time":"2026-09-21T19:51:43Z","sha256":"68a86424e95be011ab100ba078387e7b3ba51169d6027bce287d1f5527a6c437","source":"amazon-inspector","versions":["1.0.1"]}]}}