baserCMS is a website development framework.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Mar 31, 2026 · NIST NVD

   Detected

   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

2. Jun 17, 2026 · NIST NVD

   Updated

   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

Affected

• cpe basercms/basercmsversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-30940

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-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/theme_files/add.json) that allows arbitrary file write. An authenticated administrator can include ../ seque

  nvd.nist.gov

References

• Vendor Advisory · basercms.net
• Release Notes · github.com
• Exploit · github.com