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CVE-2025-15611

Popup Box AYS Pro < 5.5.0 - Admin+ Stored Cross-Site Scripting (XSS) via CSRF

CVSS 5.4 MEDIUMEPSS 0.1%
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
Exploit maturity
Proof of concept
Public proof of concept exists, but not yet automated.
CVSS 5.4EPSS 0.1%KEV nãoPoC públicaNuclei Metasploit Patch
Lifecycle
07 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Affected products
Unknown · Popup Box
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.