The Otter Blocks WordPress plugin before 2.6.6 does not properly escape its mainHeadings blocks’ attribute before appending it to the final rendered block, allowing contributors to conduct Stored XSS attacks.
[
{
"vendor": "Unknown",
"product": "Otter Blocks ",
"versions": [
{
"status": "affected",
"versionType": "semver",
"version": "0",
"lessThan": "2.6.6"
}
],
"defaultStatus": "unaffected"
}
]