CVE-2021-24515 : What You Need to Know

The Video Gallery - Vimeo and YouTube Gallery WordPress plugin before version 1.1.5 is affected by a Stored Cross-Site Scripting vulnerability that allows attackers to inject malicious scripts into the Title and Description of videos in a gallery.

Understanding CVE-2021-24515

This CVE-2021-24515 impacts the Video Gallery - Vimeo and YouTube Gallery WordPress plugin, version 1.1.5 and below, potentially exposing websites to Cross-Site Scripting attacks.

What is CVE-2021-24515?

The Video Gallery WordPress plugin before 1.1.5 does not properly sanitize the Title and Description of videos in a gallery, opening the door for Stored Cross-Site Scripting (XSS) attacks.

The Impact of CVE-2021-24515

The vulnerability in Video Gallery - Vimeo and YouTube Gallery plugin could allow an attacker to execute malicious scripts in the context of a user's browser, leading to unauthorized actions or data theft.

Technical Details of CVE-2021-24515

This section covers the specific technical aspects of the CVE.

Vulnerability Description

The issue arises due to the lack of proper sanitization of user-supplied input in the Title and Description fields of video galleries, enabling attackers to insert malicious scripts that get executed when viewed by other users.

Affected Systems and Versions

The vulnerability affects the Video Gallery - Vimeo and YouTube Gallery WordPress plugin versions prior to 1.1.5.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the Title or Description fields of videos within the gallery. When a user views the video, the script gets executed in their browser.

Mitigation and Prevention

Protect your website against CVE-2021-24515 with these mitigation strategies.

Immediate Steps to Take

Update the Video Gallery - Vimeo and YouTube Gallery plugin to version 1.1.5 or newer to patch the vulnerability.
Regularly scan your website for any signs of unauthorized script injections.

Long-Term Security Practices

Implement a Content Security Policy (CSP) to restrict the execution of scripts on your website.
Educate users on safe browsing practices to minimize the risk of XSS attacks.

Patching and Updates

Stay informed about security updates for all installed plugins and themes. Promptly apply patches to eliminate known vulnerabilities.