{"id":"MAL-2026-16071","revision":null,"records":[{"revision":"82b592f596074343a9a7750af6f879b2","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"MAL-2026-16071","aliases":[],"title":"Malicious code in cat-sis2go-utils (npm)","description":"cat-sis2go-utils is a dependency-confusion package published against the SIS2GO namespace, with versions inflated to 99.0.0 and 99.1.0. It ships no library code (index.js is an 87-byte stub), and package.json declares both preinstall and postinstall running `node scripts/run.js`, so the payload executes twice during npm install before any application code. The script resolves a DNS canary and POSTs to a webhook.site collector; 99.1.0 additionally sends os.userInfo().username and os.hostname(). The author labels this a PoC, but the beacon fires on any install that resolves the package and exfiltrates a username usable for follow-on attacks, and dependency-confusion packages require incident response even when trivial.\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (ad357542f3dd0e1b598ef36d440b1868ac28c6889226864bf799b2f7b6bf5e91)\nPackage cat-sis2go-utils@99.0.0 declares both preinstall and postinstall lifecycle hooks in package.json that execute scripts/run.js on every npm install. The script unconditionally issues a DNS lookup against d22d92dc-84e5-4b58-8cd6-75bf1ac452c7.dnshook.site and POSTs a JSON beacon containing the installer's hostname and process context to https://webhook.site/d22d92dc-84e5-4b58-8cd6-75bf1ac452c7. The package description self-identifies as a dependency-confusion PoC, and the 99.0.0 version is consistent with a resolution-winning squat targeting an internal package name. Installing the package results in arbitrary code execution on the installer host and fingerprints the machine to third-party out-of-band collectors under the operator's control.\n","state":0,"publishedAt":"2026-09-09T05:33:44+00:00","modifiedAt":"2026-09-16T01:15:05.4240317+00:00","affected":[{"ecosystem":"npm","name":"cat-sis2go-utils","ranges":[],"versions":["99.1.0","99.0.0"],"rawVersionEvidence":null}],"metrics":[],"references":["https://www.npmjs.com/package/cat-sis2go-utils/v/99.1.0","https://www.npmjs.com/package/cat-sis2go-utils/v/99.0.0"],"sourceUrl":"https://osv.dev/vulnerability/MAL-2026-16071","license":"OSV · upstream source license applies","key":"osv:MAL-2026-16071","identifiers":["MAL-2026-16071"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-13T12:59:11.9732431+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-13T12:59:11.9732431+00:00","lastSuccessAt":"2026-11-13T12:59:12.1229749+00:00","error":null,"lastVerifiedAt":"2026-11-13T12:59:12.1229756+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-f139040820e198a7b90c89ade0a85e4d1784f6cdedc33dd35667c553a90ed9b3","complete":true,"records":425359,"lastAttemptAt":"2026-11-13T12:57:12.1370926+00:00","lastSuccessAt":"2026-11-13T12:57:12.0535039+00:00","error":null,"lastVerifiedAt":"2026-11-13T12:57:12.1370926+00:00","snapshotPublishedAt":"2026-11-13T12:35:15+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-8106b486b70c4e0a972457e9bec940ae","complete":false,"records":13795,"lastAttemptAt":"2026-11-13T13:08:46.7498468+00:00","lastSuccessAt":"2026-11-13T13:08:46.746+00:00","error":"412 identifier lookups failed; latest failures include AccessDenied (HTTP 403). Other identifiers were checked independently.","lastVerifiedAt":"2026-11-13T13:08:46.746+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13087,"expectedIdentifiers":13848,"failedIdentifiers":412},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-13T12:59:11.9732431+00:00","complete":true,"records":1123,"lastAttemptAt":"2026-11-13T12:59:11.9732431+00:00","lastSuccessAt":"2026-11-13T12:59:12.1237796+00:00","error":null,"lastVerifiedAt":"2026-11-13T12:59:12.1237798+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-18b27772e3264b22ab6b919eb23a22fd","complete":true,"records":13795,"lastAttemptAt":"2026-11-13T12:59:14.4637385+00:00","lastSuccessAt":"2026-11-13T12:59:14.459+00:00","error":null,"lastVerifiedAt":"2026-11-13T12:59:14.459+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13848,"expectedIdentifiers":13848,"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":"2026-11-13T12:59:07.8110438+00:00","lastSuccessAt":"2026-11-12T23:19:15.5239119+00:00","error":null,"lastVerifiedAt":"2026-11-13T12:59:07.8110438+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":"2026-11-13T12:57:12.2985214+00:00","lastSuccessAt":"2026-11-12T18:16:50.7862525+00:00","error":null,"lastVerifiedAt":"2026-11-13T12:57:12.2985214+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-ab4ad5f59937c0596645e186474e26d2fffbbe6ecc09983ad71f9a0d88918405","complete":true,"records":3129,"lastAttemptAt":"2026-11-13T12:59:11.9406927+00:00","lastSuccessAt":"2026-11-13T12:59:11.7864534+00:00","error":null,"lastVerifiedAt":"2026-11-13T12:59:11.9406927+00:00","snapshotPublishedAt":"2026-11-13T12:47:49+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-7d9437160a3664a4238cadabbe17e78db87dde648ca4c671841d50155dfa5d6c","complete":true,"records":231770,"lastAttemptAt":"2026-11-13T12:59:07.6810383+00:00","lastSuccessAt":"2026-11-13T12:59:06.1905777+00:00","error":null,"lastVerifiedAt":"2026-11-13T12:59:07.6810383+00:00","snapshotPublishedAt":"2026-11-13T12:33:13+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}