Popup Box: Cross-site request forgery
Popup Box is affected by cross-site request forgery. The vulnerable path is reachable without authentication. Exploitation relies on a signed-in privileged user submitting an attacker-controlled request. The published affected range is < 5.5.0.
- Component
- Popup Box
- Plugin slug
popup-box- Affected
- < 5.5.0
- Safe version
5.5.0- Published
- Apr 07, 2026
This CVE was published Apr 07, 2026 and is one of 12 known issues for this plugin.
Update, patch or deactivate.
Update Popup Box to 5.5.0 or later, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Popup Box WordPress plugin before 5.5.0 does not properly validate nonces in the add_or_edit_popupbox() function before saving popup data, allowing unauthenticated attackers to perform Cross-Site Request Forgery attacks. When an authenticated admin visits a malicious page, the attacker can create or modify popups with arbitrary JavaScript that executes in the admin panel and frontend.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N