The ZYREX POPUP WordPress plugin through 1.0 does not validate the type of files uploaded when creating a popup, allowing a high privileged user (such as an Administrator) to upload arbitrary files, even when modifying the file system is disallowed, such as in a multisite install.
[
{
"vendor": "Unknown",
"product": "ZYREX POPUP",
"versions": [
{
"status": "affected",
"versionType": "custom",
"version": "0",
"lessThanOrEqual": "1.0"
}
],
"defaultStatus": "affected",
"collectionURL": "https://wordpress.org/plugins"
}
]