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CVE PROGRAM SOURCE RECORD7.2 High

CVE-2026-30940

baserCMS: Path Traversal in Theme File API Leads to Arbitrary File Write and RCE

Description

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/theme_files/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 directory outside the theme directory, which may result in remote code execution (RCE). This issue has been patched in version 5.2.3.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

baserproject basercms

  • < 5.2.3affected

References