High 7.2Published Mar 31, 2026

CVE-2026-30940baserCMS is a website development framework.

Updated under an hour ago (2026-10-19 06:20 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for basercms

Exploited in the last 30 days

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.

CVSS: 7.2 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-22, CWE-73
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

basercms basercms basercms:basercms	before 5.2.3	NVD

References

https://basercms.net/security/JVN_20837860vendor-advisory
https://github.com/baserproject/basercms/releases/tag/5.2.3release-notes
https://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcqexploit, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.