The Base64 Encoder/Decoder WordPress plugin through 0.9.2 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin
[
{
"vendor": "Unknown",
"product": "Base64 Encoder/Decoder",
"versions": [
{
"status": "affected",
"versionType": "semver",
"version": "0",
"lessThanOrEqual": "0.9.2"
}
],
"defaultStatus": "affected"
}
]