Open-Source Security Intelligence

Know every vulnerability
before it knows you.

DevGuard continuously monitors your dependencies and alerts you when CVEs like this one affect your stack — with real-time threat intelligence built for developers.

Search

GHSA-673x-f5wx-fxpw

HighCVSS 7.6 / 10
Published Aug 28, 2020·Last modified Mar 14, 2026
Affected Components(0)

No affected components available

Description

baserCMS 4.3.6 and earlier is affected by Cross Site Scripting (XSS) and Remote Code Execution (RCE).

  • Impact: XSS to RCE via Arbitrary file upload.
  • Attack vector is: Administrator must be logged in.
  • Components are: ThemeFilesController.php, UploaderFilesController.php.
  • Tested baserCMS Version : 4.3.6 (Latest)
  • Affected baserCMS Version : 4.2.0 ~ 4.3.6 (XSS), 3.0.10 ~ 4.3.6 (RCE)
  • Patches : https://basercms.net/security/20200827

Found by Vulnerability Research team in Flatt Security Inc.

Risk Scores
Base Score
7.6

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs high-level or administrative privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
7.0

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
2.15%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Browse More

Scan your project

Continuously monitor your dependencies and get alerted when vulnerabilities like this one affect your stack.

Checkout DevGuard