VULNERABILITY INTELLIGENCE

CVE-2021-22540

CVSS score6.1 MEDIUM

EPSS probability0.68%

CISA KEVNot currently listed

Published2021-04-22

Last modified2026-06-17

Description

Bad validation logic in the Dart SDK versions prior to 2.12.3 allow an attacker to use an XSS attack via DOM clobbering. The validation logic in dart:html for creating DOM nodes from text did not sanitize properly when it came across template tags.