CVE-2023-40028
MediumCVSS 4.9Exploitation Probability (EPSS)
Very high risk99th percentile - higher than 99% of all known CVEs
Summary
Ghost is an open source content management system. Versions prior to 5.59.1 are subject to a vulnerability that allows authenticated users to upload files that are symlinks, which can lead to unauthorized reading of any files on the host operating system.
Risk Assessment
Organizations may be exposed to unauthorized access to sensitive data, potentially leading to serious security breaches.
Recommendation
It is recommended to upgrade to version 5.59.1, which contains a fix for this vulnerability. Administrators should also check the `content/` folder for unknown symlinks.
Original NVD description (English source)
Ghost is an open source content management system. Versions prior to 5.59.1 are subject to a vulnerability which allows authenticated users to upload files that are symlinks. This can be exploited to perform an arbitrary file read of any file on the host operating system. Site administrators can check for exploitation of this issue by looking for unknown symlinks within Ghost's `content/` folder. Version 5.59.1 contains a fix for this issue. All users are advised to upgrade. There are no known workarounds for this vulnerability.