CVE-2021-4390: Contact Form 7 Style <= 3.2 - Cross-Site Request Forgery Bypass

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-07-01 · updated 2026-06-17
Weakness: CWE-352

Description

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.

Affected products

ionuticlanzan Contact Form 7 Style: through 3.2

References

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
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/

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