CVE-2021-4404: Event Espresso 4 Decaf <= 4.10.11 - Cross-Site Request Forgery Bypass
The Event Espresso 4 Decaf plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 4.10.11. This is due to missing or incorrect nonce validation on the ajaxHandler() function. This makes it possible for unauthenticated attackers to op into notifications via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2021-4404?
CVE-2021-4404 has a medium severity rating due to its potential for Cross-Site Request Forgery attacks.
How do I fix CVE-2021-4404?
To fix CVE-2021-4404, update the Event Espresso 4 Decaf plugin to version 4.10.12 or later, which includes the necessary nonce validation.
Who is affected by CVE-2021-4404?
CVE-2021-4404 affects users of the Event Espresso 4 Decaf plugin for WordPress running versions up to and including 4.10.11.
What type of vulnerability is CVE-2021-4404?
CVE-2021-4404 is a Cross-Site Request Forgery (CSRF) vulnerability that allows unauthenticated attackers to exploit the plugin's functionality.
How can I protect my WordPress site from CVE-2021-4404?
To protect your WordPress site from CVE-2021-4404, ensure that the Event Espresso 4 Decaf plugin is updated regularly and monitor for any suspicious activities.