Responsive Lightbox & Gallery <= 2.5.3 - Authenticated (Author+) Server-Side Request Forgery

Server-Side Request Forgery (SSRF)
CVE CVE-2025-12359
CVSS Medium (5.4)
Publicly Published November 18, 2025
Last Updated November 19, 2025
Researcher Dmitrii Ignatyev
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.

References

1 affected software package

Software Type Plugin
Software Slug responsive-lightbox (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 2.5.3
Patched Version
  • 2.5.4
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