CVE-2020-15154 Cross Site Scripting in baserCMS
An attacker with admin access can execute arbitrary scripts via XSS in baserCMS, potentially compromising the application.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-15154?
CVE-2020-15154 is a high-severity cross-site scripting vulnerability in Basercms Basercms, published on 28 Aug 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
baserCMS 4.3.6 and earlier is affected by Cross Site Scripting (XSS) via arbitrary script execution. Admin access is required to exploit this vulnerability. The affected components are: content_fields.php, content_info.php, content_options.php, content_related.php, index_list_tree.php, jquery.bcTree.js. The issue is fixed in version 4.3.7.
Weakness: CWE-79
Which versions are affected by CVE-2020-15154?
2 open source packages ship an affected version, including baserproject/basercms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
baserproject/basercms Packagist | From 4.0.0 | 4.3.7 |
baserproject/basercms Packagist | From 4.0.0 | 4.3.7 |
Products include Basercms Basercms.
How do I fix CVE-2020-15154?
Upgrade baserproject/basercms to 4.3.7 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2020-15154 being exploited?
There is no known exploitation of CVE-2020-15154 in the wild and no public exploit code.
Other vulnerabilities in Basercms Basercms
- CVE-2023-25654 baserCMS File Uploader Remote Code Execution (RCE) vulnerability
- CVE-2023-25655 baserCMS allows any file to be uploaded
- CVE-2017-10842 baserCMS SQL Injection vulnerability
- CVE-2026-30880 baserCMS: OS command injection vulnerability in installer
- CVE-2026-21861 baserCMS: OS Command Injection Leading to Remote Code Execution (RCE)
Sources
Also known as GHSA-cpxc-67rc-c775.