Medium severity4.3NVD Advisory· Published Jul 12, 2023· Updated Apr 8, 2026
CVE-2021-4421
CVE-2021-4421
Description
The Advanced Popups plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.1.1. This is due to missing or incorrect nonce validation on the metabox_popup_save() function. This makes it possible for unauthenticated attackers to save meta tags via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Affected products
2cpe:2.3:a:ashstonestudios:advanced_popups:*:*:*:*:*:wordpress:*:*+ 1 more
- cpe:2.3:a:ashstonestudios:advanced_popups:*:*:*:*:*:wordpress:*:*range: <=1.1.1
- (no CPE)range: <=1.1.1
Patches
Vulnerability mechanics
References
9- plugins.trac.wordpress.org/changesetnvdPatch
- blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/nvdThird Party Advisory
- blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/nvdThird Party Advisory
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/nvdThird Party Advisory
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/nvdThird Party Advisory
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/nvdThird Party Advisory
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/nvdThird Party Advisory
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/nvdThird Party Advisory
- www.wordfence.com/threat-intel/vulnerabilities/id/dc7b51e5-6eb7-41ba-add3-f083fb34c5e1nvdThird Party Advisory
News mentions
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