CVE-2025-12359

MediumCVSS 5.4

Published: 19/11/2025(UTC)Updated: 18/10/2026(UTC)Translated: 19/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.24%

14th percentile - higher than 14% of all known CVEs

Summary

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.

Risk Assessment

This can lead to unauthorized access to internal services and exposure of sensitive information.

Recommendation

Update the plugin to a version newer than 2.5.3 or restrict network request capabilities.

Other vulnerabilities in Responsive Lightbox & Gallery

CVE-2026-103897Medium
The Responsive Lightbox & Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to and including 2.7.9 due to insufficient input sanitization and output escaping. This allows authenticated attackers with editor-level access and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the plugin's 'Comments' lightbox setting to be enabled (disabled by default), a moderator to approve the injected comment, and a site visitor to click the affected image to open the lightbox.

Original NVD description (English source)

Vulnerability data from NVD (NIST) · CISA KEV · EPSS