{"id":"EUVD-2026-5340","revision":"ffeefb2e086a4eb896ffac5d82ab518c","records":[{"revision":"ffeefb2e086a4eb896ffac5d82ab518c","observedAt":"2026-10-28T02:09:23.744+00:00","statement":{"source":"euvd","id":"EUVD-2026-5340","aliases":["CVE-2026-25521","GHSA-rxrv-835q-v5mh"],"title":"Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. In versions from 2.0.12 to before 2.0.39, a prototype pollution vulnerability exists in locutus. Despite a previous fix that attempted to mitigate…","description":"Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. In versions from 2.0.12 to before 2.0.39, a prototype pollution vulnerability exists in locutus. Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using String.prototype. This issue has been patched in version 2.0.39.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","score":9.4,"severity":null}],"references":["https://github.com/locutusjs/locutus/security/advisories/GHSA-rxrv-835q-v5mh","https://github.com/locutusjs/locutus/commit/042af9ca7fde2ff599120783e720a17f335bb01c"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-5340","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Feb 4, 2026, 9:20:32 PM","dateUpdated":"Jul 15, 2026, 2:49:16 AM"},"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-2026-5340","identifiers":["EUVD-2026-5340","CVE-2026-25521","GHSA-rxrv-835q-v5mh"]},"retained":false,"historicalAffected":[]}],"coverage":[]}