CVE-2026-4283

WP DSGVO Tools (GDPR) <= 3.1.38 - Missing Authorization to Unauthenticated Account Destruction of Non-Admin Users

2026-03-23 16:27
shark3y

Strategic Overview

Status
Patched in 3.1.39
Affected Plugin
WP DSGVO Tools (GDPR)
Affected Version
<= 3.1.38
CVSS
9.1Critical
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-4283
View all WP DSGVO Tools (GDPR) vulnerabilities

At a glance

CVE-2026-4283 is a critical-severity Missing Authorization vulnerability in the WP DSGVO Tools (GDPR) WordPress plugin, affecting versions <= 3.1.38. It carries a CVSS score of 9.1 (reachable over the network; low attack complexity; high integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 3.1.39; sites on affected versions should update now. Disclosed March 2026, reported by shark3y.

Vulnerability Overview

The WP DSGVO Tools (GDPR) plugin for WordPress is vulnerable to unauthorized account destruction in all versions up to, and including, 3.1.38. This is due to the `super-unsubscribe` AJAX action accepting a `process_now` parameter from unauthenticated users, which bypasses the intended email-confirmation flow and immediately triggers irreversible account anonymization. This makes it possible for unauthenticated attackers to permanently destroy any non-administrator user account (password randomized, username/email overwritten, roles stripped, comments anonymized, sensitive usermeta wiped) by submitting the victim's email address with `process_now=1`. The nonce required for the request is publicly available on any page containing the `[unsubscribe_form]` shortcode.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on integrity, availability.

CWE-862: Missing Authorization

Reaching this weakness in WP DSGVO Tools (GDPR) <= 3.1.38 takes no account at all. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For WP DSGVO Tools (GDPR) the fix is 3.1.39: builds <= 3.1.38 are affected, anything from 3.1.39 onward is not.

Remediation

Update to version 3.1.39, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: WP DSGVO Tools (GDPR) 3.1.39 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-4283https://www.wordfence.com/threat-intel/vulnerabilities/id/21389122-cb39-45d1-a889-b830d3a55603https://nvd.nist.gov/vuln/detail/CVE-2026-4283

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C