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CVE-2025-12359

MEDIUM 5.4 CVSS 3.1
Published
November 19, 2025
Last modified
October 18, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-918
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • dfactory Responsive Lightbox & Gallery — Up to and including 2.5.3

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-fast-image.php#L25
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-frontend.php#L1531
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/class-galleries.php#L3648
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.5.3/includes/functions.php#L108
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3397940%40responsive-lightbox%2Ftrunk&old=3358021%40responsive-lightbox%2Ftrunk&sfp_email=&sfph_mail=
  • research.cleantalk.org https://research.cleantalk.org/cve-2025-12359
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/7f4c0bd6-f289-4a52-ac11-345076c32d84?source=cve
  • nvd.nist.gov Official NVD record