CVE-2025-12359 Responsive Lightbox & Gallery <= 2.5.3 - Authenticated (Author+) Server-Side Request Forgery
Authenticated attackers with Author access can exploit SSRF in Responsive Lightbox & Gallery to query and modify internal services via arbitrary web requests.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-12359?
CVE-2025-12359 is a medium-severity server-side request forgery vulnerability in dfactory Responsive Lightbox & Gallery, published on 19 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Responsive Lightbox & Gallery plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.5.3 via the 'get_image_size_by_url' function. This is due to insufficient validation of user-supplied URLs when determining image dimensions for gallery items. This makes it possible for authenticated attackers, with Author-level access and above, to make web requests to arbitrary locations originating from the web application which can be used to query and modify information from internal services.
Weakness: CWE-918
Which versions are affected by CVE-2025-12359?
How do I fix CVE-2025-12359?
No fix has been published for CVE-2025-12359 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2025-12359 being exploited?
There is no known exploitation of CVE-2025-12359 in the wild and no public exploit code.
Sources
Also known as GHSA-x557-gw6m-864x.