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Vulnerability record · CVE-2018-18942 · published 5 November 2018

CVE-2018-18942: Basercms unrestricted file upload vulnerability

Basercms · Basercms

In baserCMS before 4.1.4, lib\Baser\Model\ThemeConfig.php allows remote attackers to execute arbitrary PHP code via the admin/theme_configs/form data[ThemeConfig][logo] parameter.

7.2 CVSS 3.0 High EPSS 2.4% · top 16.5% CWE-434 · Unrestricted file upload
7.2CVSS 3.0 base score, v2 6.5
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In baserCMS before 4.1.4, lib\Baser\Model\ThemeConfig.php allows remote attackers to execute arbitrary PHP code via the admin/theme_configs/form data[ThemeConfig][logo] parameter.

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://sunu11.com/2018/10/31/baserCMS/ ExploitThird Party Advisory
https://basercms.net/release/4_1_4 Release NotesVendor Advisory
https://github.com/baserproject/basercms/issues/959 Issue TrackingThird Party Advisory
http://sunu11.com/2018/10/31/baserCMS/ ExploitThird Party Advisory
https://basercms.net/release/4_1_4 Release NotesVendor Advisory
https://github.com/baserproject/basercms/issues/959 Issue TrackingThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-18942), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.