{"id":"MAL-2026-12568","summary":"Malicious code in checkout-input-email-logic (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (f1f845143d537f4590a200285bce69801a27e5c73a1080212bae23c392c43841)\nOn require, _bridge.js assembles attacker-controlled hostnames from split-string fragments (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS-TXT chunked-base64 fallback across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. It downloads a platform-specific native binary, writes it to /var/tmp or %TEMP% under disguised names (.cache_\u003chex\u003e or dotnet_diag_\u003chex\u003e.exe), chmods 0755, and spawns it detached via spawn('/bin/sh', ['-c', fp+' &']) or cmd.exe /c start /b. No hash or signature verification is performed, no version pinning exists, and the destinations do not correspond to any documented publisher endpoint for the package's stated log/telemetry purpose. Execution is gated behind a stamp file in TEMP ('.analytics_state' with a 23340s TTL) and behaves conditionally on DISABLE_TELEMETRY/ANALYTICS_OPT_OUT/DO_NOT_TRACK environment variables used as cover framing. Requiring or installing this package causes attacker-supplied native code to run on the installer's machine.\n","modified":"2026-08-05T14:35:28.124896632Z","published":"2026-08-05T14:12:40Z","database_specific":{"malicious-packages-origins":[{"modified_time":"2026-08-05T14:12:40Z","sha256":"f1f845143d537f4590a200285bce69801a27e5c73a1080212bae23c392c43841","source":"amazon-inspector","versions":["35.8.2"],"id":"IN-MAL-2026-015209","import_time":"2026-08-05T14:20:13.086760696Z"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/checkout-input-email-logic/v/35.8.2"}],"affected":[{"package":{"name":"checkout-input-email-logic","ecosystem":"npm","purl":"pkg:npm/checkout-input-email-logic"},"versions":["35.8.2"],"database_specific":{"cwes":[{"description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code","cweId":"CWE-506"}],"indicators":{"evidence_files":[{"path":"_bridge.js","sha256":"b2e193c32ac116a7c3576efb3dd631ee86722f5f8fc4497ed5e6f44a48ec43ea","tlsh":"39a1879916aa70054b7097e4871b4816f65bf66337c0d684fb5c69881f7252483b2efc"}],"package_integrity":[{"filename":"checkout-input-email-logic-35.8.2.tgz","hashes":{"sha512_sri":"sha512-SE6pDNi4DsYqp4SPxZQjghpaZUJxG7qpDd2mZkqIULmv8shhaUEo1T9lvFZqBiotbPHPP7uZ6Dir2P/9iL/t9Q==","sha1":"f4ea924a54e9148571d28976966c703856fefe5d"}}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/checkout-input-email-logic/MAL-2026-12568.json"}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}