CVE-2026-2479

medium

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/44276b28-9509-4f59-936c-fff2ae404076?source=cve

https://plugins.trac.wordpress.org/changeset/3464566?contextall=1

https://plugins.trac.wordpress.org/browser/responsive-lightbox/trunk/includes/class-remote-library.php#L329

https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.0/includes/class-remote-library.php#L344

https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.0/includes/class-remote-library.php#L329

Details

Source: Mitre, NVD

Published: 2026-02-25

Updated: 2026-02-25

Risk Information

CVSS v2

Base Score: 4

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Severity: Medium