The Twenty20 Image Before-After WordPress plugin through 1.5.9 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks
[
{
"vendor": "Unknown",
"product": "Twenty20 Image Before-After",
"versions": [
{
"status": "affected",
"versionType": "custom",
"version": "0",
"lessThanOrEqual": "1.5.9"
}
],
"defaultStatus": "affected",
"collectionURL": "https://wordpress.org/plugins"
}
]