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.
{
"source": [
"CPE_FIELD",
"REFERENCES"
],
"cpe": "cpe:2.3:a:dart:dart_software_development_kit:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "2.12.3"
}
]
}