CVE-2021-42359: WP DSGVO Tools (GDPR) <= 3.1.23 Unauthenticated Arbitrary Post Deletion
WP DSGVO Tools (GDPR) <= 3.1.23 had an AJAX action, ‘admin-dismiss-unsubscribe‘, which lacked a capability check and a nonce check and was available to unauthenticated users, and did not check the post type when deleting unsubscription requests. As such, it was possible for an attacker to permanently delete an arbitrary post or page on the site by sending an AJAX request with the “action” parameter set to “admin-dismiss-unsubscribe” and the “id” parameter set to the post to be deleted. Sending such a request would move the post to the trash, and repeating the request would permanently delete the post in question.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-42359?
CVE-2021-42359 is considered to have a significant severity level due to its potential for unauthenticated users to exploit it.
How do I fix CVE-2021-42359?
To fix CVE-2021-42359, upgrade the WP DSGVO Tools (GDPR) plugin to version 3.1.24 or later.
What is the impact of CVE-2021-42359 on my website?
CVE-2021-42359 could allow unauthenticated attackers to delete unsubscription requests, potentially leading to unauthorised changes in your site's functionality.
Which versions of the WP DSGVO Tools (GDPR) are affected by CVE-2021-42359?
CVE-2021-42359 affects versions of WP DSGVO Tools (GDPR) up to and including 3.1.23.
Who is at risk from CVE-2021-42359?
Websites using WP DSGVO Tools (GDPR) versions 3.1.23 or earlier without additional security measures are at risk from CVE-2021-42359.