Ghost CMS vulnerabilities

Ghost is a Node.js content management system. In versions up to 6.37.0, when Ghost is behind a shared caching layer, an unauthenticated user could send an x-ghost-preview header that altered the rendered frontend response.

Ghost is a Node.js content management system. Versions 3.24.0 through 6.19.0 allow unauthenticated attackers to perform arbitrary reads from the database.

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.

An arbitrary file upload vulnerability in the file upload module of Ghost CMS v4.42.0 allows attackers to execute arbitrary code via a crafted file. The vendor states that files can only be uploaded and published by trusted users, which is intentional.

In the Ghost content management system, from version 5.46.1 to 6.21.2, the validation applied to filters on public API endpoints could be partially bypassed, allowing the disclosure of private fields via a brute force attack. If SQLite was used, password hashes were fully accessible, while in the case of MySQL, the case of the password hashes was lost, potentially rendering further brute force attacks ineffective.

Ghost is a Node.js content management system. From versions 6.19.4 to 6.21.1, insufficient validation of the client-supplied Content-Type on Ghost's Admin API file upload endpoint allowed uploaded files to be served with an attacker-chosen content type from S3/GCS storage backends.

Ghost is a Node.js content management system. From versions 6.19.4 to 6.21.1, when re-rendering posts, Ghost could send HTTP requests to unauthorized image hosts, posing a security risk.

Ghost is a Node.js content management system. From versions 6.0.9 to 6.21.1, the private-IP check for outbound HTTP requests could be bypassed via DNS rebinding, allowing an attacker to coerce the Ghost server into reaching hosts on internal networks.

Ghost is a Node.js content management system. From versions 6.0.9 to 6.21.1, it is possible to bypass the IP filter when making an external request, allowing it to target an internal service using an IPv6 literal that maps to a private IPv4 address.