CVE-2025-3516 Simple Lightbox < 2.9.4 - Contributor+ Stored XSS
Contributors can inject malicious scripts via unescaped attributes in the Simple Lightbox plugin, leading to stored XSS attacks.
- 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-2025-3516?
CVE-2025-3516 is a medium-severity cross-site scripting vulnerability in Unknown Simple Lightbox, published on 16 May 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The Simple Lightbox WordPress plugin before 2.9.4 does not validate and escape some of its attributes before outputting them back in a page/post, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
Weakness: CWE-79
Which versions are affected by CVE-2025-3516?
It affects 1 product.
Products include Archetyped Simple Lightbox.
How do I fix CVE-2025-3516?
No fix has been published for CVE-2025-3516 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-2025-3516 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-3516 exists.
Sources
Also known as GHSA-x4jw-p584-84v2.