CVE-2023-4390 Popup box < 3.7.2 - Admin+ Stored Cross-Site Scripting
Administrators can inject arbitrary scripts in Popup box plugin fields, bypassing unfiltered_html restrictions in multisite setups.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-4390?
CVE-2023-4390 is a medium-severity cross-site scripting vulnerability in Unknown Popup box, published on 31 Oct 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The Popup box WordPress plugin before 3.7.2 does not sanitize and escape some Popup fields, which could allow high-privilege users such as an administrator to inject arbitrary web scripts even when the unfiltered_html capability is disallowed (for example in a multisite setup).
Weakness: CWE-79
Which versions are affected by CVE-2023-4390?
It affects 1 product.
Products include Ays-Pro Popup Box.
How do I fix CVE-2023-4390?
No fix has been published for CVE-2023-4390 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-2023-4390 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4390 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-2024-9599 Popup Box < 4.7.8 - Admin+ Stored XSS
Sources
Also known as GHSA-42cp-342j-hw3x.