CVE-2025-71310 Cross-site scripting in GDPR cookies module for Backdrop CMS
An attacker with specific permissions can inject malicious scripts via the YouTube service configuration in the Backdrop CMS GDPR cookies module.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-71310?
CVE-2025-71310 is a low-severity cross-site scripting vulnerability in BackdropCMS GDPR cookies module for Backdrop CMS, published on 26 May 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-80
Which versions are affected by CVE-2025-71310?
How do I fix CVE-2025-71310?
No fix has been published for CVE-2025-71310 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-71310 being exploited?
There is no known exploitation of CVE-2025-71310 in the wild and no public exploit code.
Sources
Also known as GHSA-2m22-x9h5-mq25.