The AnyComment WordPress plugin before 0.3.5 has an API endpoint which passes user input via the redirect parameter to the wp_redirect() function without being validated first, leading to an Open Redirect issue, which according to the vendor, is a feature.
[
{
"product": "AnyComment",
"vendor": "Unknown",
"versions": [
{
"lessThan": "0.3.5",
"status": "affected",
"version": "0.3.5",
"versionType": "custom"
}
]
}
]