Cross Site Scripting Vulnerability in FusionPBX by FusionPBX Solutions
CVE-2020-21054

6.1MEDIUM

Key Information:

Vendor

Fusionpbx

Status
Fusionpbx
Vendor
CVE Published:
20 May 2021

What is CVE-2020-21054?

A Cross Site Scripting (XSS) vulnerability in FusionPBX version 4.5.7 enables remote attackers to inject arbitrary web scripts or HTML. This flaw occurs through an unsanitized 'f' variable found in the app/vars/vars_textarea.php file. Attackers can exploit this vulnerability to execute malicious scripts in the context of a victim's browser session, potentially compromising sensitive user data or leading to further security breaches.

References

https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-xs...
x_refsource_MISC
https://github.com/fusionpbx/fusionpbx/commit/2489004c7b7...
x_refsource_MISC

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.