{"id":"EUVD-2026-38320","revision":"96f3a53e5dcb45fa84c2c9caf71b428c","records":[{"revision":"96f3a53e5dcb45fa84c2c9caf71b428c","observedAt":"2026-11-05T11:45:11.254+00:00","statement":{"source":"euvd","id":"EUVD-2026-38320","aliases":["CVE-2026-55388","GHSA-x9g3-xrwr-cwfg"],"title":"piscina is a node.js worker pool implementation. Prior to 6.0.0-rc.2, 5.2.0, and 4.9.3, piscina's constructor and run() paths read the filename option via plain member access. Both reads fall through the prototype chain when the caller's op…","description":"piscina is a node.js worker pool implementation. Prior to 6.0.0-rc.2, 5.2.0, and 4.9.3, piscina's constructor and run() paths read the filename option via plain member access. Both reads fall through the prototype chain when the caller's options object doesn't have filename as an own property. When Object.prototype.filename is polluted upstream the inherited value flows to worker_threads.Worker import and the attacker's .mjs runs in the worker. This vulnerability is fixed in 6.0.0-rc.2, 5.2.0, and 4.9.3.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1,"severity":null}],"references":["https://github.com/piscinajs/piscina/security/advisories/GHSA-x9g3-xrwr-cwfg"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-38320","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 22, 2026, 4:50:40 PM","dateUpdated":"Nov 3, 2026, 7:14:08 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-38320","identifiers":["EUVD-2026-38320","CVE-2026-55388","GHSA-x9g3-xrwr-cwfg"]},"retained":false,"historicalAffected":[]}],"coverage":[]}