CVE-2026-30940 - baserCMS: Path Traversal in Theme File API Leads to Arbitrary File Write and RCE
CVE ID :CVE-2026-30940
Published : March 31, 2026, 12:45 a.m. | 20 minutes ago
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.
Severity: 0.0 | NA
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Published : March 31, 2026, 12:45 a.m. | 20 minutes ago
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.
Severity: 0.0 | NA
Visit the link for more details, such as CVSS details, affected products, timeline, and more...