{"id":"CVE-2026-73647","revision":"444ed7457e5b4c779d82498141b6012a","records":[{"revision":"444ed7457e5b4c779d82498141b6012a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-73647","aliases":[],"title":"Quasar Framework: Prototype pollution in Quasar extend() utility","description":"Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to 2.22.0, the public extend() utility in ui/src/utils/extend/extend.js recursively copied attacker-controlled object keys during extend(true, target, source) deep merges without rejecting an own __proto__ property. The merge could descend into the prototype object and write attacker-controlled properties to Object.prototype in the same JavaScript process. Applications that passed user-controlled or partially user-controlled objects to extend() could experience logic bypass, unsafe default-option injection, denial of service, or other application-specific impact when polluted properties were later consumed. This issue is fixed in version 2.22.0.","state":0,"publishedAt":"2026-08-13T17:57:09.014+00:00","modifiedAt":"2026-08-13T18:41:21.421+00:00","affected":[{"ecosystem":"Vendor product","name":"quasar","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"quasarframework\",\n                    \"product\": \"quasar\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.22.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","score":5.6,"severity":"MEDIUM"}],"references":["https://github.com/quasarframework/quasar/security/advisories/GHSA-3r53-75j5-3g7j","https://github.com/quasarframework/quasar/commit/d0a95d95ab3c29d13e1b8ba8c5e5025fd6ce35e7","https://github.com/quasarframework/quasar/releases/tag/quasar-v2.22.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73647","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-73647","identifiers":["CVE-2026-73647"]},"retained":false,"historicalAffected":[]}],"coverage":[]}