{"id":"EUVD-2026-42311","revision":"8dbc7b1985a742d4a4fde2f54e2e464d","records":[{"revision":"8dbc7b1985a742d4a4fde2f54e2e464d","observedAt":"2026-11-05T12:42:54.518+00:00","statement":{"source":"euvd","id":"EUVD-2026-42311","aliases":["CVE-2026-59876","GHSA-jfj6-75fj-8934"],"title":"protobufjs compiles protobuf definitions into JavaScript (JS) functions. From 8.2.0 until 8.6.5, the protobufjs Text Format extension parsed string-keyed map entries using ordinary property assignment, allowing a map entry with key __proto_…","description":"protobufjs compiles protobuf definitions into JavaScript (JS) functions. From 8.2.0 until 8.6.5, the protobufjs Text Format extension parsed string-keyed map entries using ordinary property assignment, allowing a map entry with key __proto__ to change the prototype of the returned map object instead of creating an own map entry in protobufjs/ext/textformat. This issue is fixed in version 8.6.5.","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:L/I:L/A:N","score":4.8,"severity":null}],"references":["https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jfj6-75fj-8934","https://github.com/protobufjs/protobuf.js/pull/2335","https://github.com/protobufjs/protobuf.js/commit/9f97fe413072d3beb52c74e62d88ea8adc9444d8","https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.5"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42311","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jul 8, 2026, 3:31:11 PM","dateUpdated":"Jul 9, 2026, 2:41:45 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-2026-42311","identifiers":["EUVD-2026-42311","CVE-2026-59876","GHSA-jfj6-75fj-8934"]},"retained":false,"historicalAffected":[]}],"coverage":[]}