Vulnerability Description
The Responsive Lightbox & Gallery plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.7.1. This is due to the use of `strpos()` for substring-based hostname validation instead of strict host comparison in the `ajax_upload_image()` function. 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.0/includ
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.0/includ
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/trunk/includes/cl
- https://plugins.trac.wordpress.org/changeset/3464566?contextall=1
- https://www.wordfence.com/threat-intel/vulnerabilities/id/44276b28-9509-4f59-936
FAQ
What is CVE-2026-2479?
CVE-2026-2479 is a vulnerability with a CVSS score of 5.0 (MEDIUM). The Responsive Lightbox & Gallery plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.7.1. This is due to the use of `strpos()` for substring-base...
How severe is CVE-2026-2479?
CVE-2026-2479 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-2479?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.