GHSA-C5C6-37VQ-PJCQ baserCMS Path Traversal Leads to Arbitrary File Write and RCE via Theme File API

Summary A path traversal vulnerability exists in the baserCMS 5.x theme file management API /baser/api/admin/bc-theme-file/themefiles/add.json that allows arbitrary file write. An authenticated administrator can include ../ sequences in the path parameter to create a PHP file in an arbitrary...