CVE-2026-30940

baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the 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...

CVE-2026-21861

baserCMS is a website development framework. Prior to version 5.2.3, baserCMS contains an OS command injection vulnerability in the core update functionality. An authenticated administrator can execute arbitrary OS commands on the server due to improper handling of user-controlled input that is...

CVE-2026-30940 baserCMS: Path Traversal in Theme File API Leads to Arbitrary File Write and RCE

baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the 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...