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Backdrop CMS GDPR Cookies Module Cross-Site Scripting Vulnerability

Vulnerability

A cross-site scripting (XSS) vulnerability has been identified in the GDPR Cookies module for Backdrop CMS, affecting all versions prior to 1.x-1.3.5. The issue arises when a malicious value is entered in the optional 'Info content' field for the YouTube service, allowing for XSS attacks. This vulnerability requires a user to have the 'Create a GDPR Cookies Service' or 'Edit any GDPR Cookies Service' permission, and the YouTube service must be configured on the site.

Impact

Exploitation of this vulnerability allows for cross-site scripting, where an attacker can inject malicious scripts that are executed in the context of the user's browser.

Remediation

Users are advised to upgrade to the latest version of the GDPR Cookies module. The updated version can be downloaded from the GDPR Cookies module page on the Backdrop CMS website.

Added: May 26, 2026, 5:52 PM
Updated: May 26, 2026, 5:52 PM

Vulnerability Rating

Custom Algorithm
spread
5.2
impact
1.7
exploitability
5.2
remediation
7.7
relevance
9.6
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.