Ghost versions before 6.20.0 contain a file extension filtering bypass vulnerability that allows unauthenticated attackers to read theme templates and metadata. Attackers can use URL encoding to bypass extension validation and access sensitive theme files.
{
"cpes": [
"cpe:2.3:a:ghost:ghost:*:*:*:*:*:node.js:*:*"
],
"severity": "Medium"
}