Advanced Popups <= 1.1.1 - Cross-Site Request Forgery Bypass
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| codesupplyco | Advanced Popups | up to 1.1.1 | — | No fix listed | CNA |
- Advanced Popups Vendorcodesupplyco Affected up to 1.1.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ashstonestudios:advanced_popups:*:*:*:*:*:wordpress:*:* | up to 1.1.1 | Vulnerable | Ashstonestudios |
- cpe:2.3:a:ashstonestudios:advanced_popups:*:*:*:*:*:wordpress:*:* Versions up to 1.1.1 Vulnerable ·Ashstonestudios
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4421
- 2026-10-03 Alias added: GHSA-842w-2972-7683
References
Advisory 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/dc7b51e5-6eb7-41ba-add3-f083fb34c5e1?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-3/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/
- https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
More codesupplyco vulnerabilities
- TI-2024-02769 Networker - Tech News WordPress Theme with Dark Mode <= 1.1.9 - Missing Authorization CVSS 3.1MEDIUM 5.3
- TI-2025-32773 WordPress Networker theme <= 1.2.0 - Local File Inclusion Vulnerability CVSS 3.1HIGH 8.1
- TI-2026-28533 WordPress Uppercase theme < 1.2.2 - Local File Inclusion vulnerability CVSS 3.1HIGH 8.1
- TI-2024-08378 Missing authorization in codesupplyco Sight – Professional Image Gallery and Portfolio CVSS 3.1MEDIUM 5.3
- TI-2026-22518 WordPress Powerkit plugin <= 3.1.0 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
- TI-2026-13167 Powerkit <= 3.1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes CVSS 3.1MEDIUM 6.4
Sources
- CVE-2021-4421 · CVE Program
- CVE-2021-4421 · NVD
- FIRST EPSS
- GHSA-842w-2972-7683 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences