{"id":"MAL-2026-6359","revision":null,"records":[{"revision":"1c995d85641946a4b15fe0b2fc78d0f8","observedAt":"2026-10-29T15:12:22.973+00:00","statement":{"source":"osv","id":"MAL-2026-6359","aliases":["GHSA-2gqj-wrf5-35w8"],"title":"Malicious code in html-to-gutenberg (npm)","description":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (ad55bd01687902eea54021b3d30ce0b10f795a1521b425b32e57ef46b7a4ae77)\nThe published tarball contains api.js at the package root, a heavily obfuscated loader using an obfuscator.io-style XOR-decoded string table (key 0x46) that reconstructs identifiers including 'constructor', stashes require and module on the global object, and uses Function(...) to compile and immediately invoke an approximately 9.6 KB decoded payload. The file is referenced only by the author's manual scripts.build step (node api.js && tsc); it is not referenced by the package's main entry (index.js), not imported by any reachable module, and not invoked by the declared postinstall. The postinstall script performs a local file-copy of vendor/fetch-page-assets/index.ts into node_modules via fs.copyFileSync with no network I/O and no shell exec of api.js. Because the obfuscated loader is dormant on both npm install and require of the package, no installer-harm dataflow is produced in normal consumer use, but shipping an obfuscated dynamic-eval loader with concealed payload contents in a published tarball is an unusual transparency and supply-chain hygiene concern.\n\n## Source: ghsa-malware (6381496c1a275836b5d3c11ca7f141ad32f84b5263450bf5cb3c9a91289dcd1d)\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":"2026-06-24T01:51:00+00:00","modifiedAt":"2026-10-29T14:30:42.9459003+00:00","affected":[{"ecosystem":"npm","name":"html-to-gutenberg","ranges":[],"versions":["4.2.11","4.2.14","4.2.16","4.2.15","4.2.13","4.2.12","4.2.17","4.2.18","4.2.19","4.2.20","4.2.21","4.2.22","4.2.26","4.2.25","4.2.24"],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/advisories/GHSA-2gqj-wrf5-35w8","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.14","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.17","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.13","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.18","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.16","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.12","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.15","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.19","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.20","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.24","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.26","https://www.npmjs.com/package/html-to-gutenberg/v/4.2.25"],"sourceUrl":"https://osv.dev/vulnerability/MAL-2026-6359","license":"OSV · upstream source license applies","key":"osv:MAL-2026-6359","identifiers":["MAL-2026-6359","GHSA-2gqj-wrf5-35w8"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-07T07:27:10.0308911+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-07T07:27:10.0308911+00:00","lastSuccessAt":"2026-11-07T07:27:10.1806401+00:00","error":null,"lastVerifiedAt":"2026-11-07T07:27:10.180641+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-bb5c9d5a08063ef076042e33dd72a7d0ffa4c4487efdcf3106e29ba55ec2ad57-e2c080f02357fa2a3d144a661c51c212b571c4d7ae811251058237d8f5735e04","complete":true,"records":420765,"lastAttemptAt":"2026-11-07T07:27:09.5001885+00:00","lastSuccessAt":"2026-11-07T07:27:09.4258602+00:00","error":null,"lastVerifiedAt":"2026-11-07T07:27:09.5001885+00:00","snapshotPublishedAt":"2026-11-07T07:18:10+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-d96f71bdcfbc4488a5792ba75bf2da26","complete":false,"records":13630,"lastAttemptAt":"2026-11-07T07:35:47.5493947+00:00","lastSuccessAt":"2026-11-07T07:35:47.6096347+00:00","error":null,"lastVerifiedAt":"2026-11-07T07:35:47.6096347+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-07T07:27:10.0308911+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-07T07:27:10.0308911+00:00","lastSuccessAt":"2026-11-07T07:27:10.181531+00:00","error":null,"lastVerifiedAt":"2026-11-07T07:27:10.1815313+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-1262a9fa83024e28a1560dfc0c9cdf3c","complete":true,"records":13645,"lastAttemptAt":"2026-11-07T07:27:10.8526655+00:00","lastSuccessAt":"2026-11-07T06:27:08.533+00:00","error":null,"lastVerifiedAt":"2026-11-07T06:27:08.533+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13685,"expectedIdentifiers":13685,"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-0eb4d6dde62dffacd040ad992d4fd5a65cd7d0dc5f5f4cfa8b41967fc6f9ca5f","complete":true,"records":9914,"lastAttemptAt":"2026-11-07T07:27:09.8729489+00:00","lastSuccessAt":"2026-11-06T20:10:36.6450506+00:00","error":null,"lastVerifiedAt":"2026-11-07T07:27:09.8729489+00:00","snapshotPublishedAt":"2026-11-06T20:02:57+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":"2026-11-07T07:27:09.6560768+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-07T07:27:09.6560768+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-335633e78a15c9cde10a6025895b5617717087fb945489ae7e15d377bacf34a9","complete":true,"records":3055,"lastAttemptAt":"2026-11-07T07:27:09.9878127+00:00","lastSuccessAt":"2026-11-06T16:03:00.7615789+00:00","error":null,"lastVerifiedAt":"2026-11-07T07:27:09.9878127+00:00","snapshotPublishedAt":"2026-11-06T16:02:48+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-a0b728bc1c5526b5429930c00621636eba8655069c176697c3080f8377619ad7","complete":true,"records":231291,"lastAttemptAt":"2026-11-07T07:27:09.7648455+00:00","lastSuccessAt":"2026-11-07T00:28:51.1983528+00:00","error":null,"lastVerifiedAt":"2026-11-07T07:27:09.7648455+00:00","snapshotPublishedAt":"2026-11-06T23:33:08+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}