CVE-2024-5020 - CVE House
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Status published Medium CVE-2024-5020

Multiple Plugins <= (Various Versions) - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via FancyBox JavaScript Library

Vulnerability Description

Multiple plugins for WordPress are vulnerable to Stored Cross-Site Scripting via the plugin's bundled FancyBox JavaScript library (versions 1.3.4 to 3.5.7) in various versions due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Craig Smith

Affected Vendor

extendthemes

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Affected Software

Colibri Page Builder, Envira Gallery – Image Photo Gallery, Albums, Video Gallery, Slideshows & More, Accordion Slider, Form Maker by 10Web – Mobile-Friendly Drag & Drop Contact Form Builder, Getwid – Gutenberg Blocks, Firelight Lightbox, Responsive Lightbox & Gallery, Carousel, Slider, Photo Gallery with Lightbox, Video Slider, by WP Carousel, FancyBox for WordPress, Visual Portfolio, Photo Gallery & Post Grid, Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery, WPC Smart Quick View for WooCommerce, Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder, Easy Social Feed Premium, FV Flowplayer Video Player
Vulnerable Versions:
0

Timeline

Official Publish: December 4th, 2024
Last Modified: April 8th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Weaknesses (CWE)