{"id":"MAL-2026-17449","revision":null,"records":[{"revision":"c04a5044272d4923b84e82e526b1bc08","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"MAL-2026-17449","aliases":["GHSA-qhp3-5q65-76mj"],"title":"Malicious code in prastzyy (npm)","description":"This package is a fork of the Baileys WhatsApp Web library (npm) and belongs to the \"PhantomSub\" family described by OX Security in September 2026: the publisher injected code that, without the installer asking, uses the installer's own authenticated WhatsApp session to subscribe that account to WhatsApp Channels (newsletters) the publisher chose, by sending the WhatsApp `w:mex` FOLLOW query (query_id 7871414976211147) for each target channel JID.\n\n`package/lib/Socket/newsletter.js` lines 62-103 define `AUTO_FOLLOW_JIDS`, eight base64 strings decoded with `Buffer.from(..., \"base64\")`, and when the connection opens (line 102) schedule a FOLLOW query for each, 90 seconds apart (cited line 90: `await newsletterWMexQuery(jid, QueryIds.FOLLOW);`). Decoded JIDs: `120363430764800148@newsletter`, `120363400505489366@newsletter`, `120363427794786523@newsletter`, `120363428149518339@newsletter`, `120363411665168068@newsletter`, `120363410421978309@newsletter`, `120363426605069018@newsletter` and `120363425633124233@newsletter`. There is no opt-out and the behavior is not documented.\n\nLine numbers refer to version 1.0.0.\n\nStatic review of the published tarball(s) found no code that sends WhatsApp credentials or session keys off-host, no install-time payload (the only install hook is Baileys' stock Node.js version check in `engine-requirements.js`), and no persistence; the payload runs when an application creates a WhatsApp socket with the library. The harm is the covert use of the victim's account to inflate the publisher's channel subscribers.\n\nSHA-256 of the published npm tarball(s): 1.0.0: `9451d13f06ff94c6d627f7ba7d8a7ad7f73a6cfbb856c7f4c2e29c3b187484bb`.\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: ghsa-malware (bf5b70083dc2338579dac55f7f321700cf098ccc3ac71d5506c8dca2b3855ddc)\nAny computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.\n","state":0,"publishedAt":"2026-10-19T06:23:40+00:00","modifiedAt":"2026-10-19T17:37:49.1307929+00:00","affected":[{"ecosystem":"npm","name":"prastzyy","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"}]}],"versions":["1.0.0"],"rawVersionEvidence":null}],"metrics":[],"references":["https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/","https://www.npmjs.com/package/prastzyy","https://github.com/advisories/GHSA-qhp3-5q65-76mj"],"sourceUrl":"https://osv.dev/vulnerability/MAL-2026-17449","license":"OSV · upstream source license applies","key":"osv:MAL-2026-17449","identifiers":["MAL-2026-17449","GHSA-qhp3-5q65-76mj"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-08T22:02:16.0606753+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-08T22:02:16.0606753+00:00","lastSuccessAt":"2026-11-08T22:02:16.2994172+00:00","error":null,"lastVerifiedAt":"2026-11-08T22:02:16.2994182+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-eaa64dac63caa79c8d4905619258c41c51b39e461b996124e1a21b5e85e7e738-5c1b3bec2d88ca854826c6481a0dc8d7444a0d42f1465638fb0ec19ea1213afc","complete":true,"records":421267,"lastAttemptAt":"2026-11-08T22:02:15.5779251+00:00","lastSuccessAt":"2026-11-08T22:02:15.4942534+00:00","error":null,"lastVerifiedAt":"2026-11-08T22:02:15.5779251+00:00","snapshotPublishedAt":"2026-11-08T21:27:04+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-fd9e659eac384b31b6b54c14a478a6b6","complete":true,"records":13654,"lastAttemptAt":"2026-11-08T22:02:46.9922536+00:00","lastSuccessAt":"2026-11-08T22:02:46.989+00:00","error":null,"lastVerifiedAt":"2026-11-08T22:02:46.989+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"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":"2026-11-08T22:02:16.0606753+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-08T22:02:16.0606753+00:00","lastSuccessAt":"2026-11-08T22:02:16.3005264+00:00","error":null,"lastVerifiedAt":"2026-11-08T22:02:16.3005266+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-d44f9ddfc3b944cf9f918f0296ab9362","complete":true,"records":13666,"lastAttemptAt":"2026-11-08T22:02:41.4763214+00:00","lastSuccessAt":"2026-11-08T22:02:41.472+00:00","error":null,"lastVerifiedAt":"2026-11-08T22:02:41.472+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"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-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-08T22:02:15.9240904+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-08T22:02:15.9240904+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+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-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-08T22:02:15.7236649+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-08T22:02:15.7236649+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+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-964c14035e6f0f6478b2870fad6a7ef9f6045876d4a12af2c2e514521e54b6af","complete":true,"records":3055,"lastAttemptAt":"2026-11-08T22:02:16.0280445+00:00","lastSuccessAt":"2026-11-08T11:07:12.1927025+00:00","error":null,"lastVerifiedAt":"2026-11-08T22:02:16.0280445+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+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-f8647d7ba64b1ba0dfdc7130944766d5b36d5b77d18fff0c79e651a4cff3c2b9","complete":true,"records":231293,"lastAttemptAt":"2026-11-08T22:02:15.8267172+00:00","lastSuccessAt":"2026-11-08T11:06:56.2918717+00:00","error":null,"lastVerifiedAt":"2026-11-08T22:02:15.8267172+00:00","snapshotPublishedAt":"2026-11-08T11:02:50+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}