CVE-2020-15273: Basercms

High severity, CVSS 8.1. EPSS: 1% chance of exploitation in the next 30 days.

baserCMS before version 4.4.1 is vulnerable to Cross-Site Scripting. The issue affects the following components: Edit feed settings, Edit widget area, Sub site new registration, New category registration. Arbitrary JavaScript may be executed by entering specific characters in the account that can access the file upload function category list, subsite setting list, widget area edit, and feed list on the management screen. The issue was introduced in version 4.0.0. It is fixed in version 4.4.1.

Affected products

• Basercms Basercms: from 4.0.0, before 4.4.1 (fixed in 4.4.1)

Published 2020-10-30. Last modified 2026-06-17.