CVE-2020-8923 – XSS in Dart

https://notcve.org/view.php?id=CVE-2020-8923

An improper HTML sanitization in Dart versions up to and including 2.7.1 and dev versions 2.8.0-dev.16.0, allows an attacker leveraging DOM Clobbering techniques to skip the sanitization and inject custom html/javascript (XSS). Mitigation: update your Dart SDK to 2.7.2, and 2.8.0-dev.17.0 for the dev version. If you cannot update, we recommend you review the way you use the affected APIs, and pay special attention to cases where user-provided data is used to populate DOM nodes. Consider using Element.innerText or Node.text to populate DOM elements. Un saneamiento HTML inapropiado en Dart versiones hasta 2.7.1 y las versiones dev 2.8.0-dev.16.0, permite a un atacante aprovechar las técnicas DOM Clobbering para omitir el saneamiento e inyectar html/javascript personalizado (XSS). • https://github.com/dart-lang/sdk/security/advisories/GHSA-hfq3-v9pv-p627 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •