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.

Related CVEs

CVE-2021-22540

Key Information

GHSA ID

GHSA-36mh-f84c-9fqq

Published

May 24, 2022 5:48 PM

Last Modified

May 24, 2022 5:48 PM

CVSS Score

5.0 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: July 6, 2025 6:30 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.