Check Point Advisories

Jitsi Meet Cross-Site Scripting (CVE-2021-26812)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-2116
Date Published:	28 Feb 2024
Severity:	Medium
Last Updated:	Wednesday 28 February, 2024
Source:
Industry Reference:	CVE-2021-26812
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Jitsi Meet 2.7 and later, 2.8.3 and prior
Vulnerability Description	A cross-site scripting vulnerability exists in Jitsi Meet. Successful exploitation of this vulnerability would allow remote attackers to inject arbitrary web script into the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Jitsi Meet Cross-Site Scripting (CVE-2021-26812) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: Jitsi Meet Cross-Site Scripting (CVE-2021-26812)