CVE-2020-15159

Cross Site Scripting leading to RCE in baserCMS

HIGH
7.6
CVSS Score
Published: August 28, 2020 at 09:55 PM UTC
Updated: June 17, 2026 at 02:56 AM UTC
2 products affected across 2 vendorsBasercmsBasercms

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Severity
HIGH7.6
Exploit prediction
EPSS 2%

Description

baserCMS 4.3.6 and earlier is affected by Cross Site Scripting (XSS) and Remote Code Execution (RCE). This may be executed by logging in as a system administrator and uploading an executable script file such as a PHP file.The affected components are ThemeFilesController.php and UploaderFilesController.php. This is fixed in version 4.3.7.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 4.3.6
v < < 4.3.7
Affected range stops below < 4.3.7, so it looks safe — our inference, not a vendor statement

CVSS

7.6HIGHGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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