CVE-2022-28397: 
JavaScript vulnerability analysis and mitigation

CVE-2022-28397 is an arbitrary file upload vulnerability discovered in Ghost CMS version 4.42.0. The vulnerability was disclosed on April 12, 2022. The issue was reported as allowing attackers to execute arbitrary code via a crafted file through the file upload module (NVD, CVE).

The vulnerability received a CVSS v3.1 score of 9.8 (CRITICAL) and CVSS v2.0 score of 7.5 (HIGH). However, this vulnerability is disputed as the vendor states that file uploads can only be performed by trusted users, which is an intentional feature of the system (NVD).

If exploited, the vulnerability could potentially allow attackers to execute arbitrary code on the system through crafted file uploads. However, since this requires authenticated access from trusted users, the real-world impact is limited by the Ghost CMS security model (Ghost Security Docs).

As per Ghost's security documentation, the platform is designed to only allow trusted users to upload and publish files. This is an intentional security model where all users are considered privileged/trusted. For organizations concerned about potential abuse, Ghost recommends splitting the front-end and admin areas onto different domains to provide additional security through browser protections (Ghost Security Docs).