chai-deflect

{"schema_version":"1.7.4","id":"MAL-2026-10051","published":"2026-07-09T15:32:06Z","modified":"2026-09-01T11:20:25.241295225Z","aliases":["GHSA-7p2p-g2j6-w6v3"],"summary":"Malicious code in chai-deflect (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (4328eb627063ce40813ae27e3cb7ec1a967d17aa6c2bf045f0083d42e09352ea)\nOn require('chai-deflect'), index.js top-level invokes launchDeflectBootstrap() which detaches a child process running lib/caller.js. caller.js issues an HTTP GET to http://server-genimi-check.vercel.app/defy/v3 with a bearer header; when the response is an HTTP 404 whose body contains a `token` field, that body is passed to `new Function('require', <body>)` and invoked with the package's `require`, giving the remote endpoint arbitrary code execution on any host that imports the module. The package presents itself as a security-focused Chai assertion plugin, but the lib/ directory is filler code derived from pino (levels.js, multistream.js, proto.js, transport.js, worker.js) unrelated to Chai, and lib/const.js hides a base64-encoded secondary URL (https://jsonkeeper.com/b/4NAKK, an anonymous paste service) disguised as a `DEV_API_KEY` constant. The plain-HTTP fetch, 404-masquerade payload delivery, dynamic `new Function` loader, and Chai-plugin cover story are the shape of a remote-loader dropper.\n","affected":[{"package":{"name":"chai-deflect","ecosystem":"npm"},"versions":["1.1.5","1.1.6"],"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":"lib/caller.js","sha256":"e833ee2e2282c22142369f8bf5ea57acf8a971bdb498c8f477ec9cf4cffe4e04","tlsh":"3111d0753cf5216a0122a8ee970b98163419e5132959d5913fcc43c11f6645d45f7bcc"},{"path":"lib/const.js","sha256":"d10853dde92fdc48d8cb5505d89e0030fd35e1416a16a820fe5ec4aceef01c4f","tlsh":"b9c08c8351f0684b04301bb3a50ca991f2a1d26f0884160231f564844b396a92848fb7"},{"path":"package.json","sha256":"a8efd25649cdd092f2d2c9d7d2974ddc557eb9ea6c7ec88b3054dbb96417d09a","tlsh":"32014764c93c9d7305ea22a144694157a1629e0b8848fc0d33ea412ccf9c9af50fea6e"}],"package_integrity":[{"filename":"chai-deflect-1.1.5.tgz","hashes":{"sha1":"4b709396e979bae3385f57a7170f226b9e1075a9","sha512_sri":"sha512-mcAFg5MJeS96pd62+Zz9lqFs4T72yneoRvhHilX4n3dC5Fn/XoK5vS0439srqBlix6Au8fQjULQ3IceAUJXRaA=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/chai-deflect/v/1.1.5"},{"type":"PACKAGE","url":"https://www.npmjs.com/package/chai-deflect/v/1.1.6"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-7p2p-g2j6-w6v3"}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-009126","import_time":"2026-07-09T16:20:43.240070159Z","modified_time":"2026-07-09T15:32:06Z","sha256":"4328eb627063ce40813ae27e3cb7ec1a967d17aa6c2bf045f0083d42e09352ea","source":"amazon-inspector","versions":["1.1.5"]},{"id":"IN-MAL-2026-009137","import_time":"2026-07-09T16:20:44.48151509Z","modified_time":"2026-07-09T15:33:41Z","sha256":"9e97dd2b28340abd67d519289e048ae78c5bf62009a0c9078675979eb90f994c","source":"amazon-inspector","versions":["1.1.6"]},{"id":"RLMA-2026-06136","import_time":"2026-09-01T11:17:28.628598293Z","modified_time":"2026-08-24T16:43:56Z","sha256":"f93d33600737af4d77efae7e246eae6ab70359dfbea71a8c270e1228c4e49cce","source":"reversing-labs","versions":["1.1.5","1.1.6"]}]},"credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"},{"name":"ReversingLabs","contact":["https://www.reversinglabs.com"],"type":"FINDER"}]}