devplatform-spa-plugin-feature-toggle

{"modified":"2026-08-07T12:28:26Z","published":"2026-08-07T12:28:26Z","schema_version":"1.7.4","id":"MAL-2026-13546","summary":"Malicious code in devplatform-spa-plugin-feature-toggle (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (2d61b9d430e59b37ce3c13873e37c1dd146d468b6a06f462761e2214acd1d0fa)\ndevplatform-spa-plugin-feature-toggle@35.7.4 executes attacker-controlled code on the installer's host at module import. The package's main entry loads _support.js, which builds three hardcoded origins under *.workers.dev (oob-worker.cf101/cf102/cf103-*) by array-join concatenation to evade string scanning, with a DNS-TXT base64-chunked fallback under *.dl.wel1.ru. It downloads an OS-specific binary, writes it to /var/tmp/.cache_<rnd> on Unix or %TEMP%/dotnet_diag_<rnd>.exe on Windows, chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. Cover-story naming (\"analytics_state\", \"telemetry\", \"dotnet_diag\") does not match the package's advertised feature-toggle purpose. A sibling file lib/telemetry.js contains a larger variant of the same drop-and-exec primitives framed as an \"Analytics SDK\", not currently reached from main. The destination origins are anonymous Cloudflare Workers and a DDNS-style host, not a publisher-owned domain, and the delivered payload is an opaque executable with no pinning or integrity check.\n","affected":[{"package":{"ecosystem":"npm","name":"devplatform-spa-plugin-feature-toggle"},"versions":["35.7.4"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"_support.js","sha256":"19067328974c8a40505838d2746b1d6d18fd063aaeb4b2a53a93adcad9ecca90","tlsh":"24a1a6aa16a630098bb0d7f4c717581af65be6633380c684fb5ca5984f7312483b1efc"},{"path":"lib/telemetry.js","sha256":"440793e89f4aebd66b138c3c4659b04e74312530fccfd88b211af081c6c67744","tlsh":"9f835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"}],"package_integrity":[{"filename":"devplatform-spa-plugin-feature-toggle-35.7.4.tgz","hashes":{"sha1":"f4c6ad6d52dd53d83819573c051848362521e400","sha512_sri":"sha512-K8/4TZaMdTXiQjh+RlnpTTPuEzaUur5Az4NqixICz8/65EgbX3dQj5j/+3UwMyV2sf0mPGxuzge37dL/x4LKlg=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/devplatform-spa-plugin-feature-toggle/v/35.7.4"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-016995","import_time":"2026-08-07T12:51:21.408065853Z","modified_time":"2026-08-07T12:28:26Z","sha256":"2d61b9d430e59b37ce3c13873e37c1dd146d468b6a06f462761e2214acd1d0fa","source":"amazon-inspector","versions":["35.7.4"]}]}}