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CWE

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CVE-2026-30940

Published: Mar 31, 2026

Modified: Apr 2, 2026

PUBLISHED

CVSS v3.1

7.2

HIGH

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.

Vendor	Product	Versions
baserproject	basercms	affected `< 5.2.3`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

https://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcq

x_refsource_CONFIRM

https://basercms.net/security/JVN_20837860

x_refsource_MISC

https://github.com/baserproject/basercms/releases/tag/5.2.3

x_refsource_MISC

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