CVE-2024-9599 Popup Box < 4.7.8 - Admin+ Stored XSS
Admins can inject malicious scripts via unsanitized settings in the Popup Box WordPress plugin, enabling stored XSS attacks in multisite environments.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2024-9599?
CVE-2024-9599 is a medium-severity cross-site scripting vulnerability in Unknown Popup Box, published on 15 May 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Popup Box WordPress plugin before 4.7.8 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
Weakness: CWE-79
Which versions are affected by CVE-2024-9599?
It affects 1 product.
Products include Ays-Pro Popup Box.
How do I fix CVE-2024-9599?
No fix has been published for CVE-2024-9599 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2024-9599 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-9599 exists.
Other vulnerabilities in Unknown Popup Box
- CVE-2021-24458 Popup box < 2.3.4 - Authenticated Blind SQL Injections
- CVE-2021-24460 Popup Like box - Page Plugin < 3.5.3 - Authenticated Blind SQL Injections
- CVE-2023-27414 WordPress Popup box Plugin <= 3.4.4 is vulnerable to Cross Site Scripting (XSS)
- CVE-2025-15611 Popup Box AYS Pro < 5.5.0 - Admin+ Stored Cross-Site Scripting (XSS) via CSRF
- CVE-2023-6591 Popup Box Pro < 20.9.0 - Admin+ Stored XSS
Sources
Also known as GHSA-857x-55vg-m6q9.