CVE-2021-4390: CSRF
First published: Sat Jul 01 2023(Updated: )
The Contact Form 7 Style plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.2. This is due to missing or incorrect nonce validation on the manage_wp_posts_be_qe_save_post() function. This makes it possible for unauthenticated attackers to quick edit templates via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Credit: security@wordfence.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Contact Form 7 | <=3.2 |
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Reference Links
- https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
- https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/
- https://plugins.trac.wordpress.org/browser/contact-form-7-style/trunk/cf7-style-meta-box.php#L546
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2972cdaf-2d0a-4b55-b4f5-ccf01ff5352c?source=cve
Frequently Asked Questions
What is the severity of CVE-2021-4390?
CVE-2021-4390 has a medium severity rating due to its potential for Cross-Site Request Forgery attacks.
How do I fix CVE-2021-4390?
To fix CVE-2021-4390, update the Contact Form 7 Style plugin to version 3.3 or later.
Who is affected by CVE-2021-4390?
CVE-2021-4390 affects users of the Contact Form 7 Style plugin for WordPress versions up to and including 3.2.
What type of vulnerability is CVE-2021-4390?
CVE-2021-4390 is classified as a Cross-Site Request Forgery (CSRF) vulnerability.
Can CVE-2021-4390 be exploited by unauthenticated users?
Yes, CVE-2021-4390 can be exploited by unauthenticated attackers, allowing them unauthorized actions.
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