CVE-2026-4298: DSGVO All in one for WP WordPress Plugin Missing Authorization Vulnerability

Technical summary

The vulnerability exists in the dsgvo_reset_policy_service_func() function, which processes user-supplied parameters to reset plugin options without verifying user capabilities or validating nonce tokens. This Missing Authorization flaw (CWE-862) allows any authenticated user above Subscriber role to invoke the function and reset DSGVO-related plugin settings. The attack requires network access and valid WordPress credentials, but no elevated privileges. CVSS 3.1 score of 4.3 (Medium severity) reflects the integrity impact and low attack complexity, though confidentiality and availability remain unaffected.

Business impact

For organizations relying on this plugin for GDPR/DSGVO compliance, an unauthorized reset of privacy policies creates operational and legal risk. Your published cookie policies, consent notices, and analytics disclaimers could be reverted to generic defaults, creating misalignment between your legal documentation and actual data practices. If compliance audits or regulatory review occur after an incident, you may face questions about control gaps. Additionally, the disruption could erode user trust if consent language suddenly changes without announcement.

Affected systems

Any WordPress installation running DSGVO All in one for WP plugin version 4.9 or earlier is vulnerable. The flaw affects all deployment sizes—from small blogs to enterprise sites—provided the plugin is active and at least one user account with Subscriber-level access exists (a common default scenario). Sites without this specific plugin are unaffected.

Exploitability

Exploitation is straightforward: an attacker needs only valid WordPress credentials at Subscriber level or above and network access to the WordPress admin or REST API endpoint. No complex exploit code is required; the vulnerable function can be triggered through standard requests. The low attack complexity and prevalence of low-privileged accounts make this a practical risk for most WordPress installations. However, the attack is not remotely unauthenticated—compromised Subscriber credentials or an insider threat is a prerequisite.

Remediation

Update the DSGVO All in one for WP plugin to the patched version released after 4.9. Verify the update in your plugin management interface and confirm the version number matches the vendor's published patch. If a patch is not yet available, consider temporarily disabling the plugin until a fix is released, or implement compensating controls such as restricting Subscriber access to trusted users only and monitoring for unauthorized policy resets.

Patch guidance

Access your WordPress admin dashboard, navigate to Plugins, and update DSGVO All in one for WP to the latest available version. Verify the new version number is higher than 4.9. Test your privacy policy settings immediately after patching to ensure no unintended changes occurred during the update. Keep your WordPress core, themes, and all other plugins current as part of routine maintenance. Consult the plugin vendor's advisory for any breaking changes or configuration steps required post-patch.

Detection guidance

Monitor WordPress logs and audit trails for calls to the dsgvo_reset_policy_service_func() function, particularly from low-privileged user accounts. Review admin action logs for unexpected changes to privacy policy or cookie settings. If you have REST API logging enabled, flag POST or OPTIONS requests to endpoints related to DSGVO settings from non-administrative users. Regularly audit your active user accounts to identify and disable unnecessary Subscriber-level accounts that could be leveraged in an attack.

Why prioritize this

Although CVSS 4.3 indicates Medium severity, prioritize this vulnerability if your organization relies on this plugin for active GDPR/DSGVO compliance management. The ease of exploitation—requiring only low-level credentials and no special tools—combined with the direct impact on compliance-critical settings justifies prompt patching. The risk is elevated if your WordPress environment has broad user access or if you operate in regulated jurisdictions where privacy documentation accuracy is legally material.

Risk score, explained

CVSS 3.1 score of 4.3 reflects an integrity impact (policy data can be modified) with no confidentiality or availability loss. The score assumes an attacker already possesses valid credentials (PR:L) and can access the vulnerable function over the network (AV:N) without user interaction (UI:N). The score appropriately penalizes the authorization bypass but does not account for business context—organizations with stricter compliance obligations may assess business risk as higher than the base CVSS indicates.

Frequently asked questions