CVE-2025-12359

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

MEDIUM
5.4
CVSS Score
Published: November 19, 2025 at 05:45 AM UTC
Updated: October 18, 2026 at 08:10 PM UTC
1 product affected across 1 vendorResponsive Lightbox

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v ≤ 2.5.30

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMWordfence
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-918

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