CVE-2026-11869: WP DSGVO Tools GDPR Plugin Authorization Bypass – Unauthenticated Data Export

Technical summary

CVE-2026-11869 is an authorization bypass in the WP DSGVO Tools WordPress plugin's data subject access request (DSAR) immediate-processing path. The vulnerability stems from missing authentication and authorization checks on the endpoint that generates personal-data exports. By supplying a target user's email address via an unauthenticated request, an attacker can trigger the export mechanism and download the resulting file containing personally identifiable information. The CVSS 3.1 score of 5.3 (MEDIUM) reflects low attack complexity, network accessibility, and no user interaction required, but limited scope and confidentiality impact.

Business impact

For organizations using this plugin, the risk is twofold: data breach exposure and regulatory exposure. Unauthenticated data exfiltration violates core GDPR principles around data protection and access controls, creating potential fines and audit findings. Website operators must assume that if the plugin is installed and unpatched, any visitor's PII has been accessible without authentication. Affected organizations should inventory which user and customer data was exposed and prepare disclosure notifications where required by law.

Affected systems

WordPress sites running WP DSGVO Tools plugin versions before 3.1.40 are vulnerable. The plugin is designed for GDPR compliance and is typically installed on European-focused or privacy-conscious WordPress installations. Organizations relying on this plugin for DSAR fulfillment are at particular risk, as the vulnerability directly undermines the control mechanism meant to protect data access.

Exploitability

Exploitation is trivial. No authentication, user interaction, or special configuration is required. An attacker needs only to know or enumerate email addresses and submit them to the vulnerable DSAR endpoint. The attack is entirely remote and can be automated. No CISA KEV listing is currently recorded, but the low barrier to entry and broad exposure surface make this a high-priority fix despite the MEDIUM CVSS score.

Remediation

Update the WP DSGVO Tools plugin to version 3.1.40 or later immediately. Verify the update through the WordPress plugin dashboard or the plugin's official repository. After patching, consider auditing web server and database logs for signs of unauthorized DSAR requests or exports prior to the update. Additionally, review any DSAR request logs within the plugin itself if available.

Patch guidance

Navigate to WordPress Admin > Plugins > Installed Plugins, locate WP DSGVO Tools, and confirm the current version. If below 3.1.40, click Update. Verify the version number post-update to confirm successful deployment. For managed WordPress hosting, confirm with your provider that plugin auto-updates are enabled or request manual application of the patch. Test the DSAR workflow after patching to ensure functionality is preserved.

Detection guidance

Check web server logs (Apache/Nginx access logs) for POST or GET requests to DSAR endpoints, particularly those containing email parameters and originating from non-admin IP addresses or lacking session cookies. Monitor WordPress plugin audit logs if available. Search for database queries related to personal data exports that were triggered without corresponding authenticated user sessions. If using a WAF or IDS, look for patterns of repeated DSAR requests with different email addresses, which would indicate automated enumeration.

Why prioritize this

Although the CVSS score is MEDIUM (5.3), the vulnerability should be treated as HIGH priority for deployment. The attack requires no authentication, no user interaction, and yields direct access to sensitive PII including contact information and user comments. The barrier to exploitation is extremely low, and the data exposed is often the precise information GDPR mandates protecting. Any unpatched instance is actively exposing user privacy. Rapid patching is essential regardless of CVSS score.

Risk score, explained

The CVSS 3.1 score of 5.3 reflects the attack vector (network-based, no authentication required), attack complexity (low), and scope (unchanged). The primary driver of the score is the confidentiality impact of PII disclosure, while integrity and availability are not affected. However, CVSS does not fully capture the regulatory and reputational damage of unauthorized PII exposure, nor the ease of automated mass exploitation. Organizations should weight this higher than the numeric score suggests.

Frequently asked questions