{"id":"MAL-2026-16303","revision":null,"records":[{"revision":"c5786474c60d4a34b78c58596f4ea713","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"MAL-2026-16303","aliases":[],"title":"Malicious code in @nimbusedge2/authxsas (npm)","description":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (0146259024cc8ef3a174ff98571fe4af975b3eecf9184a0a5339d42808243d10)\nThe package's package.json declares a preinstall script that fires unconditionally on `npm install`. The script uses curl to query the cloud instance metadata service via the nip.io wildcard-DNS resolver (169.254.169.254.nip.io/latest/meta-data/), base64-encodes the response, and POSTs it over plain HTTP to a hardcoded canarytokens.com endpoint (http://canarytokens.com/terms/7dc94zmd3so67n5vbz5bxmt7v/contact.php). On installers running on AWS/GCP/Azure hosts with IMDS reachable, this leaks IAM role identifiers and, on IMDSv1, temporary cloud credentials to a third-party canary endpoint at install time. The tarball ships no source files; the manifest and its preinstall hook are the entire payload. The scope name and package name are consistent with a dependency-confusion / SSRF canary probe targeting an internal namespace.\n","state":0,"publishedAt":"2026-09-21T03:07:04+00:00","modifiedAt":"2026-09-21T03:30:16.6165265+00:00","affected":[{"ecosystem":"npm","name":"@nimbusedge2/authxsas","ranges":[],"versions":["1.1.0"],"rawVersionEvidence":null}],"metrics":[],"references":["https://www.npmjs.com/package/@nimbusedge2/authxsas/v/1.1.0"],"sourceUrl":"https://osv.dev/vulnerability/MAL-2026-16303","license":"OSV · upstream source license applies","key":"osv:MAL-2026-16303","identifiers":["MAL-2026-16303"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-13T02:18:19.0235777+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-13T02:18:19.0235777+00:00","lastSuccessAt":"2026-11-13T02:18:19.1952529+00:00","error":null,"lastVerifiedAt":"2026-11-13T02:18:19.1952559+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-d8fa82e95fdb59244e2f635e667ba17f0796ca0a4f1f4bb8cc31febcd660b76c-d88a1fdb6e581828ea29fe8c78fbc7626fed11d7056636f79a35d339eb4ed6bf","complete":true,"records":424939,"lastAttemptAt":"2026-11-13T02:16:25.192812+00:00","lastSuccessAt":"2026-11-13T02:16:25.1479457+00:00","error":null,"lastVerifiedAt":"2026-11-13T02:16:25.192812+00:00","snapshotPublishedAt":"2026-11-13T01:28:22+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-e9980c1f634d413ab516f975de77b539","complete":false,"records":13793,"lastAttemptAt":"2026-11-13T02:27:57.9062646+00:00","lastSuccessAt":"2026-11-13T02:27:57.902+00:00","error":"258 identifier lookups failed; latest failures include AccessDenied (HTTP 403). Other identifiers were checked independently.","lastVerifiedAt":"2026-11-13T02:27:57.902+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13588,"expectedIdentifiers":13846,"failedIdentifiers":258},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-13T02:18:19.0235777+00:00","complete":true,"records":1123,"lastAttemptAt":"2026-11-13T02:18:19.0235777+00:00","lastSuccessAt":"2026-11-13T02:18:19.1960261+00:00","error":null,"lastVerifiedAt":"2026-11-13T02:18:19.1960262+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-53086f18733d4bf6a716de0418c65ebd","complete":true,"records":13781,"lastAttemptAt":"2026-11-13T02:18:24.4548303+00:00","lastSuccessAt":"2026-11-13T02:18:24.451+00:00","error":null,"lastVerifiedAt":"2026-11-13T02:18:24.451+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13846,"expectedIdentifiers":13846,"failedIdentifiers":0},{"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-93e76d404e1aeb6a7e8902f5ffa06211fc86dea3b1958e297abb2668aa5e6e8c","complete":true,"records":9952,"lastAttemptAt":"2026-11-13T02:18:18.9753802+00:00","lastSuccessAt":"2026-11-12T23:19:15.5239119+00:00","error":null,"lastVerifiedAt":"2026-11-13T02:18:18.9753802+00:00","snapshotPublishedAt":"2026-11-12T23:03:02+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-4d60731753a2f72e455d1086e7203d0ef10843936dcc1cf2b45135e2caa204b0","complete":true,"records":2012,"lastAttemptAt":"2026-11-13T02:16:25.2372679+00:00","lastSuccessAt":"2026-11-12T18:16:50.7862525+00:00","error":null,"lastVerifiedAt":"2026-11-13T02:16:25.2372679+00:00","snapshotPublishedAt":"2026-11-12T17:48:11+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-20d1a8ab073a1c13ab2143dbcadb34ebb8edf1e18e16482b448513662c3d1e12","complete":true,"records":3127,"lastAttemptAt":"2026-11-13T02:18:18.9876547+00:00","lastSuccessAt":"2026-11-12T22:18:31.0338213+00:00","error":null,"lastVerifiedAt":"2026-11-13T02:18:18.9876547+00:00","snapshotPublishedAt":"2026-11-12T22:18:06+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-dc5477b487c9cb40a7a59f940ef79298ddd8743e3c3dcfd82edc84c9cc9c3545","complete":true,"records":231743,"lastAttemptAt":"2026-11-13T02:18:18.8048835+00:00","lastSuccessAt":"2026-11-13T02:18:17.366112+00:00","error":null,"lastVerifiedAt":"2026-11-13T02:18:18.8048835+00:00","snapshotPublishedAt":"2026-11-13T01:33:07+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}