CVE-2021-4421
Advanced Popups <= 1.1.1 - Cross-Site Request Forgery Bypass
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-352 |
| Vendor | codesupplyco |
| Product | advanced popups |
| Published | Jul 12, 2023 |
| Last Updated | Apr 8, 2026 |
Stay Ahead of the Next One
Get instant alerts for codesupplyco advanced popups
Be the first to know when new medium vulnerabilities affecting codesupplyco advanced popups are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
codesupplyco / Advanced Popups
0 ≤ 1.1.1
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/dc7b51e5-6eb7-41ba-add3-f083fb34c5e1?source=cve blog.nintechnet.com: https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/ blog.nintechnet.com: https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/ blog.nintechnet.com: https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/ blog.nintechnet.com: https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/ blog.nintechnet.com: https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/ blog.nintechnet.com: https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/ blog.nintechnet.com: https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/ plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2548724%40advanced-popups&new=2548724%40advanced-popups&sfp_email=&sfph_mail=
Credits
Jerome Bruandet