{"id":"CVE-2026-73647","sourceIdentifier":"security-advisories@github.com","published":"2026-08-13T18:18:20.450","lastModified":"2026-10-24T15:10:00.190","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"Quasar Framework es un framework para construir interfaces de usuario Vue.js de alto rendimiento. Antes de la 2.22.0, la utilidad pública extend() en ui/src/utils/extend/extend.js copiaba recursivamente claves de objeto controladas por el atacante durante las fusiones profundas extend(true, target, source) sin rechazar una propiedad __proto__ propia. La fusión podía descender al objeto prototipo y escribir propiedades controladas por el atacante en Object.prototype en el mismo proceso de JavaScript. Las aplicaciones que pasaban objetos controlados por el usuario o parcialmente controlados por el usuario a extend() podían experimentar omisión de lógica, inyección insegura de opciones predeterminadas, denegación de servicio u otro impacto específico de la aplicación cuando las propiedades contaminadas eran consumidas posteriormente. Este problema está corregido en la versión 2.22.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"quasarframework","product":"quasar","versions":[{"version":"< 2.22.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","baseScore":5.6,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":2.2,"impactScore":3.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-13T18:41:13.711876Z","id":"CVE-2026-73647","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-1321"}]}],"references":[{"url":"https://github.com/quasarframework/quasar/commit/d0a95d95ab3c29d13e1b8ba8c5e5025fd6ce35e7","source":"security-advisories@github.com"},{"url":"https://github.com/quasarframework/quasar/releases/tag/quasar-v2.22.0","source":"security-advisories@github.com"},{"url":"https://github.com/quasarframework/quasar/security/advisories/GHSA-3r53-75j5-3g7j","source":"security-advisories@github.com"},{"url":"https://github.com/quasarframework/quasar/security/advisories/GHSA-3r53-75j5-3g7j","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}