CVE-2021-4421
MEDIUMAdvanced Popups <= 1.1.1 - Cross-Site Request Forgery via metabox_popup_save()
Title source: llmDescription
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.
References (9)
Core 9
Core References
Third Party Advisory
https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
Third Party Advisory
https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/
Third Party Advisory
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
Third Party Advisory
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
Third Party Advisory
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/
Third Party Advisory
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
Scores
CVSS v3
4.3
EPSS
0.0035
EPSS Percentile
27.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-352
Status
published
Products (2)
ashstonestudios/advanced_popups
< 1.1.1
codesupplyco/Advanced Popups
< 1.1.1
Published
Jul 12, 2023
Tracked Since
Feb 18, 2026