The Happyforms WordPress plugin before 1.22.0 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
[
{
"vendor": "Unknown",
"product": "Form builder to get in touch with visitors, grow your email list and collect payments — Happyforms",
"versions": [
{
"status": "affected",
"versionType": "custom",
"version": "0",
"lessThan": "1.22.0"
}
],
"defaultStatus": "unaffected",
"collectionURL": "https://wordpress.org/plugins"
}
]