The setName function in filesystem/File.php in SilverStripe 2.3.x before 2.3.8 and 2.4.x before 2.4.1 allows remote authenticated users with CMS author privileges to execute arbitrary PHP code by changing the extension of an uploaded file.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.009
EPSS Ranking 75.0%