CVE-2025-71310 PUBLISHED

Assigner: mitre
Reserved: 26.05.2026 Published: 26.05.2026 Updated: 26.05.2026

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.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 1.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	High	Integrity	None	Integrity	Low
Attack Requirements	Present	Availability	None	Availability	Low
Privileges Required	High
User Interaction	Active

CVSS 4.0

Product Status

Vendor	BackdropCMS
Product	GDPR cookies module for Backdrop CMS
Versions	Default: unaffected affected from 0 to 1.x-1.3.5 (excl.)

Affected Configurations

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 xc.

Workarounds

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

Solutions

Upgrade to the latest release of the GDPR Cookies module.

References

https://backdropcms.org/security/sa-contrib-2025-013

Problem Types

CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) CWE