CVE-2020-8923: Dart Software Development Kit

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Dart Dart Software Development Kit: before 2.7.2 (fixed in 2.7.2); version 2.8.0 only

Published 2020-03-26. Last modified 2026-06-17.