CVE-2026-2479

MEDIUM 5.0

Responsive Lightbox & Gallery <= 2.7.1 - Authenticated (Author+) Server-Side Request Forgery via Remote Library Image Upload

CVSS Score

5.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	dfactory
Product	responsive lightbox & gallery
Published	Feb 25, 2026
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

dfactory / Responsive Lightbox & Gallery

0 ≤ 2.7.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

Credits

Lukasz Sobanski