Templates containing actions in unquoted HTML attributes (e.g. "attr={{.}}") executed with empty input can result in output with unexpected results when parsed due to HTML normalization rules. This may allow injection of arbitrary attributes into tags.
{
"versions": [
{
"introduced": "0"
},
{
"fixed": "1.19.9"
},
{
"introduced": "1.20.0"
},
{
"fixed": "1.20.4"
}
]
}