CVE-2025-71310

Cross‑Site Scripting via YouTube Service Info Content in BackdropCMS GDPR Cookies Module

Published May 26, 2026 CVSS 4.0 · 1.8 Low EPSS < 1% KEV · Not listed
Description
The GDPR cookies module for Backdrop CMS (before

1.x-1.3.5) doesn't sufficiently protect visitors from Cross Site Scripting (XSS) if a malicious value has been provided for the optional 'Info content' field for the YouTube service. This is mitigated by the fact that an attacker must have a role with the permission "Create a GDPR Cookies Service" or "Edit any GDPR Cookies Service" and a site must have added a YouTube service as configuration.

Remediation

Vendor Solution

Upgrade to the latest release of the GDPR Cookies module.


Vendor Workaround

Remove the permission "Create a GDPR Cookies Service" or "Edit any GDPR Cookies Service", from all roles, or remove the YouTube service as configuration.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Backdropcms
Backdropcms gdpr Cookies Module For Backdrop Cms
Vendors & Products Backdropcms
Backdropcms gdpr Cookies Module For Backdrop Cms
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Cross‑Site Scripting via YouTube Service Info Content in BackdropCMS GDPR Cookies Module
Type Values Removed Values Added
Description The GDPR cookies module for Backdrop CMS (before 1.x-1.3.5) doesn't sufficiently protect visitors from Cross Site Scripting (XSS) if a malicious value has been provided for the optional 'Info content' field for the YouTube service. This is mitigated by the fact that an attacker must have a role with the permission "Create a GDPR Cookies Service" or "Edit any GDPR Cookies Service" and a site must have added a YouTube service as configuration.
Weaknesses CWE-80
References
Metrics cvssV4_0

{'score': 1.8, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 26, 2026, 12:29 PM
Reserved
May 26, 2026, 1:06 AM
Status
Deferred
Published
May 26, 2026, 2:16 AM
Modified
Jul 24, 2026, 10:10 AM