{"id":"MAL-2026-17773","revision":null,"records":[{"revision":"d5907b7c0ca74387b753f20c8c22b007","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"MAL-2026-17773","aliases":[],"title":"Malicious code in nested-lib (npm)","description":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (0a0b849de5330a4a4984a855f83ce1638b17e459d359312319ff35dc0e02f928)\nThe package declares `scripts.postinstall = \"node beacon.cjs\"` and `index.js` also invokes `require('./beacon.cjs').fire()` at module load. `beacon.cjs` POSTs a JSON payload containing `os.hostname()`, `__dirname`, `process.cwd()`, and `process.version` over plain HTTP to the hardcoded bare-IP endpoint `http://185.158.107.175:8787/_ah/dc`. The destination is not a documented first-party service and the host identifiers are sent without any opt-in. `index.js` otherwise exports a Proxy that returns no-op functions for every property access, so the package provides no real functionality — its sole on-install and on-require effect is the beacon. The combination of a hollow Proxy shim, a bare-IP plain-HTTP destination, and automatic firing from both the npm lifecycle hook and the main module is consistent with a reconnaissance/confirmation beacon used to validate successful installation into target environments, typically preceding a second-stage payload.\n","state":0,"publishedAt":"2026-10-11T13:53:33+00:00","modifiedAt":"2026-10-11T14:30:06.7045299+00:00","affected":[{"ecosystem":"npm","name":"nested-lib","ranges":[],"versions":["1.0.0","1.0.1","1.1.0"],"rawVersionEvidence":null}],"metrics":[],"references":["https://www.npmjs.com/package/nested-lib/v/1.0.0","https://www.npmjs.com/package/nested-lib/v/1.0.1","https://www.npmjs.com/package/nested-lib/v/1.1.0"],"sourceUrl":"https://osv.dev/vulnerability/MAL-2026-17773","license":"OSV · upstream source license applies","key":"osv:MAL-2026-17773","identifiers":["MAL-2026-17773"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-10T11:25:04.0778179+00:00","complete":true,"records":1773,"lastAttemptAt":"2026-11-10T11:25:04.0778179+00:00","lastSuccessAt":"2026-11-10T11:25:05.0136335+00:00","error":null,"lastVerifiedAt":"2026-11-10T11:25:05.0136358+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-8859cf40d4337e24bd2f258cc7778fbad01bb24c79d057aaf34cf1dfc6f8917d-7f63d5ae9ad1cf5d15daca54e2cb44cc953d9727a9c4dbe21f340d16ec79e07a","complete":true,"records":421929,"lastAttemptAt":"2026-11-10T11:21:40.8171583+00:00","lastSuccessAt":"2026-11-10T11:21:40.7840841+00:00","error":null,"lastVerifiedAt":"2026-11-10T11:21:40.8171583+00:00","snapshotPublishedAt":"2026-11-10T10:23:15+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-d438db76762e40e09fae683c91dc71f3","complete":true,"records":13691,"lastAttemptAt":"2026-11-10T11:26:02.3053181+00:00","lastSuccessAt":"2026-11-10T11:26:02.298+00:00","error":null,"lastVerifiedAt":"2026-11-10T11:26:02.298+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13744,"expectedIdentifiers":13744,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-10T11:25:04.0778179+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-10T11:25:04.0778179+00:00","lastSuccessAt":"2026-11-10T11:25:05.0144698+00:00","error":null,"lastVerifiedAt":"2026-11-10T11:25:05.0144706+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-c3b5116d0840469fb49189e776b1e7eb","complete":false,"records":13697,"lastAttemptAt":"2026-11-10T11:25:33.4594859+00:00","lastSuccessAt":"2026-11-10T11:25:33.455+00:00","error":"100 identifier lookups failed; latest failures include request timeout. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-10T11:25:33.455+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13642,"expectedIdentifiers":13744,"failedIdentifiers":100},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-cdffb4589856378aa42e8d1bd4a6c74e27a180d8160bf764c44715ef760f0a62","complete":true,"records":9932,"lastAttemptAt":"2026-11-10T11:25:03.699196+00:00","lastSuccessAt":"2026-11-10T00:04:19.8260565+00:00","error":null,"lastVerifiedAt":"2026-11-10T11:25:03.699196+00:00","snapshotPublishedAt":"2026-11-09T23:48:01+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-26503967ae4379db8f374089589d6e03fb15bd31f820c9e992aaf93840c2236c","complete":true,"records":1971,"lastAttemptAt":"2026-11-10T11:21:41.0754601+00:00","lastSuccessAt":"2026-11-09T21:02:20.472473+00:00","error":null,"lastVerifiedAt":"2026-11-10T11:21:41.0754601+00:00","snapshotPublishedAt":"2026-11-09T20:18:18+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-94169eec81ea3989aa551092397ff34ae53c104b4a6ce646e1524452e4ab2a39","complete":true,"records":3065,"lastAttemptAt":"2026-11-10T11:25:03.948442+00:00","lastSuccessAt":"2026-11-10T08:04:45.5923716+00:00","error":null,"lastVerifiedAt":"2026-11-10T11:25:03.948442+00:00","snapshotPublishedAt":"2026-11-10T06:48:01+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-86f40cdda9ca36627f818d0cc8237a8a8c7c22cb687d6747a4ea12bded69e17e","complete":true,"records":231599,"lastAttemptAt":"2026-11-10T11:25:02.6977972+00:00","lastSuccessAt":"2026-11-10T11:25:00.8551311+00:00","error":null,"lastVerifiedAt":"2026-11-10T11:25:02.6977972+00:00","snapshotPublishedAt":"2026-11-10T11:03:07+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}