{"id":"GHSA-xxr7-33gg-pcg6","revision":null,"records":[{"revision":"1ffc14ce81404af0a387aa98b063b7ae","observedAt":"2026-10-26T19:35:57.103+00:00","statement":{"source":"osv","id":"MAL-2026-18099","aliases":["GHSA-xxr7-33gg-pcg6"],"title":"Malicious code in formatting-subtitles-for-claude (npm)","description":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (f683c00ef9c42d55e37cdb367179f21e58ce2441dba55485d6d19670bcefa700)\nThe package declares a postinstall hook `sh./node_modules/unicode-title-normalizer/x.js && exit 0`, which runs arbitrary shell content shipped by the separate npm dependency `unicode-title-normalizer` on every installer at install time. The package's own visible source (index.js, cli.js, README) is a near-verbatim clone of `unicode-title-normalizer`'s documented API — the README begins `# unicode-title-normalizer` and `index.js` re-implements `normalizeTitle`/`normalizeColor` — while the package is published under the unrelated name `formatting-subtitles-for-claude`. The name/content mismatch combined with the lifecycle hook shelling out to the dependency's `x.js` is a dropper shape: the installer-facing code is a decoy, and the install-time code path executed on the host is whatever bytes the dependency's maintainer chooses to ship at `x.js`, with no pinning beyond a version range, no integrity check, and no inspection.\n\n## Source: ghsa-malware (df3e538de57455a661949a30ffd71da5534d5f36c59147155be0b957d9e427df)\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":"2026-10-20T15:59:30+00:00","modifiedAt":"2026-10-26T19:00:41.0879868+00:00","affected":[{"ecosystem":"npm","name":"formatting-subtitles-for-claude","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"}]}],"versions":["1.0.1","1.0.0"],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/advisories/GHSA-xxr7-33gg-pcg6","https://www.npmjs.com/package/formatting-subtitles-for-claude/v/1.0.1","https://www.npmjs.com/package/formatting-subtitles-for-claude/v/1.0.0"],"sourceUrl":"https://osv.dev/vulnerability/MAL-2026-18099","license":"OSV · upstream source license applies","key":"osv:MAL-2026-18099","identifiers":["MAL-2026-18099","GHSA-xxr7-33gg-pcg6"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-07T16:07:52.6079466+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-07T16:07:52.6079466+00:00","lastSuccessAt":"2026-11-07T16:07:52.8396759+00:00","error":null,"lastVerifiedAt":"2026-11-07T16:07:52.8396778+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-c173d89a3f1a0bdb31cd68e866be332a5016302f586ede89a35ec193ac99504a","complete":true,"records":420933,"lastAttemptAt":"2026-11-07T16:07:52.127477+00:00","lastSuccessAt":"2026-11-07T16:07:52.0557652+00:00","error":null,"lastVerifiedAt":"2026-11-07T16:07:52.127477+00:00","snapshotPublishedAt":"2026-11-07T15:22:48+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-bee3dfbd77fe4043986590b0e0b76259","complete":true,"records":13633,"lastAttemptAt":"2026-11-07T16:18:44.6437051+00:00","lastSuccessAt":"2026-11-07T16:18:44.639+00:00","error":null,"lastVerifiedAt":"2026-11-07T16:18:44.639+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13685,"expectedIdentifiers":13685,"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":"2026-11-07T16:07:52.6079466+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-07T16:07:52.6079466+00:00","lastSuccessAt":"2026-11-07T16:07:58.5710341+00:00","error":null,"lastVerifiedAt":"2026-11-07T16:07:58.5710358+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-e1c431e1022f4db1b4e459e61c31a4ca","complete":true,"records":13645,"lastAttemptAt":"2026-11-07T16:08:00.6485737+00:00","lastSuccessAt":"2026-11-07T16:08:00.644+00:00","error":null,"lastVerifiedAt":"2026-11-07T16:08:00.644+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":"2026-11-07T16:07:52.5107257+00:00","lastSuccessAt":"2026-11-06T20:10:36.6450506+00:00","error":null,"lastVerifiedAt":"2026-11-07T16:07:52.5107257+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":"2026-11-07T16:07:52.2947928+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-07T16:07:52.2947928+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":"2026-11-07T16:07:52.5258708+00:00","lastSuccessAt":"2026-11-06T16:03:00.7615789+00:00","error":null,"lastVerifiedAt":"2026-11-07T16:07:52.5258708+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-40ad6183a951565ace1520a9b4d631e1d0bfb1d4bf7c5574c375032559f3ff53","complete":true,"records":231292,"lastAttemptAt":"2026-11-07T16:07:52.4004477+00:00","lastSuccessAt":"2026-11-07T10:29:00.4821259+00:00","error":null,"lastVerifiedAt":"2026-11-07T16:07:52.4004477+00:00","snapshotPublishedAt":"2026-11-07T09:32:47+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}