{"id":"MAL-2026-17656","revision":null,"records":[{"revision":"5b28fa7e6c5a42bb8eabaddfc7364411","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"MAL-2026-17656","aliases":[],"title":"Malicious code in css-reading-display-polyfill (npm)","description":"css-reading-display-polyfill is described as a CSS polyfill but contains no polyfill code. When its thunderboltRegistry.js is loaded, it runs `id`, `whoami`, `uname -a`, `env`, `ifconfig` and `cat /etc/hosts` and sends the output with the hostname to a webhook.site collector. The file also exports stubs named after Wix Thunderbolt registry modules. The environment variables are sent as well, so tokens and API keys stored in them can be leaked.\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (a06a8966ab81cea21f3e94074bcdb0d72ea55a96be2d03989e12aa2f4d86ad66)\nthunderboltRegistry.js runs an IIFE at module load that invokes child_process.execSync to collect host identity (id, whoami, uname), the first 2000 bytes of the environment (env | head -100), network interfaces (ifconfig), and /etc/hosts, then transmits the results together with the hostname and Node version to a hardcoded webhook.site URL (https://webhook.site/69bcd627-1871-4dda-b880-83b37ceac418) via https.get and fetch. The package exports proxies for internal Wix thunderbolt registry names (thunderboltRegistry, siteAssetsRegistry, documentManagementRegistry, editorRegistry, corvidRegistry, dataBindingRegistry, and others) with a manifest pointing at static.parastorage.com/unpkg/, and the beacon is labelled beacon=rce-poc, consistent with a dependency-confusion probe against Wix build infrastructure. The exfiltrated environment typically contains CI secrets and cloud credentials, giving an installer-side credential-theft blast radius wherever the build pipeline resolves these internal names to this package.\n","state":0,"publishedAt":"2026-10-08T03:38:12+00:00","modifiedAt":"2026-10-08T05:00:05.338719+00:00","affected":[{"ecosystem":"npm","name":"css-reading-display-polyfill","ranges":[],"versions":["1.0.0"],"rawVersionEvidence":null}],"metrics":[],"references":["https://www.npmjs.com/package/css-reading-display-polyfill/v/1.0.0"],"sourceUrl":"https://osv.dev/vulnerability/MAL-2026-17656","license":"OSV · upstream source license applies","key":"osv:MAL-2026-17656","identifiers":["MAL-2026-17656"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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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-f581ef223ba240a69a1abcff00ee4876","complete":true,"records":13758,"lastAttemptAt":"2026-11-11T09:58:42.1822037+00:00","lastSuccessAt":"2026-11-11T09:58:42.065+00:00","error":null,"lastVerifiedAt":"2026-11-11T09:58:42.065+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13812,"expectedIdentifiers":13812,"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":"2026-11-11T09:57:43.3267414+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-11T09:57:43.3267414+00:00","lastSuccessAt":"2026-11-11T09:57:52.273871+00:00","error":null,"lastVerifiedAt":"2026-11-11T09:57:52.273872+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-304fa97221904da4b3dcd306fc4b8a4b","complete":true,"records":13752,"lastAttemptAt":"2026-11-11T09:57:53.9573384+00:00","lastSuccessAt":"2026-11-11T09:26:01.454+00:00","error":null,"lastVerifiedAt":"2026-11-11T09:26:01.454+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13812,"expectedIdentifiers":13812,"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-3562b6c78fd1bd0f0b55daf66a0926ae24f65e462df7f6d928caad458fc696bf","complete":true,"records":9947,"lastAttemptAt":"2026-11-11T09:57:42.4406155+00:00","lastSuccessAt":"2026-11-11T04:27:43.6877707+00:00","error":null,"lastVerifiedAt":"2026-11-11T09:57:42.4406155+00:00","snapshotPublishedAt":"2026-11-11T03:32:46+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-456002455e0ab94bb92c95476d4e6d175c104cd594749982afd96c893728ecbc","complete":true,"records":2010,"lastAttemptAt":"2026-11-11T09:57:39.9639043+00:00","lastSuccessAt":"2026-11-11T02:36:58.1276999+00:00","error":null,"lastVerifiedAt":"2026-11-11T09:57:39.9639043+00:00","snapshotPublishedAt":"2026-11-11T01:17:51+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-2bc186fc4a8179fd66d765079d475b0b8e3af9f89b57dcc310e7773ded48b2cc","complete":true,"records":3088,"lastAttemptAt":"2026-11-11T09:57:43.196106+00:00","lastSuccessAt":"2026-11-11T09:25:59.9234294+00:00","error":null,"lastVerifiedAt":"2026-11-11T09:57:43.196106+00:00","snapshotPublishedAt":"2026-11-11T09:02:55+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-085e065fc9050ae18408f7e722c39653aeb186872334d7b3ec1fcafb7ed43d25","complete":true,"records":231665,"lastAttemptAt":"2026-11-11T09:57:41.7897107+00:00","lastSuccessAt":"2026-11-11T08:27:45.2700102+00:00","error":null,"lastVerifiedAt":"2026-11-11T09:57:41.7897107+00:00","snapshotPublishedAt":"2026-11-11T07:32:59+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}