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CVE-2026-6454

Firelight Lightbox <= 2.3.20 - Authenticated (Contributor+) Stored DOM Cross-Site Scripting via PDF beforeLoad 'href' Attribute

The Firelight Lightbox plugin for WordPress is vulnerable to Stored DOM Cross-Site Scripting in versions up to and including 2.3.20. This is due to insufficient sanitization of the href attribute value within the FancyBox V2 PDF beforeLoad JavaScript callback generated in inc/fancybox-2.php, where this.href is string-concatenated directly into an HTML string without escaping, allowing a stored href containing entity-encoded double-quotes to break out of the data attribute and inject arbitrary event handlers into the DOM. This makes it possible for authenticated attackers with contributor-level access and above to inject arbitrary web scripts into pages that execute whenever a user clicks the malicious PDF link.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Vendors
Firelightwp Wordpress
Products
Firelight Lightbox Wordpress
CVE-2024-50460

WordPress Firelight Lightbox plugin <= 2.3.3 - Cross Site Scripting (XSS) vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Firelight Firelight Lightbox easy-fancybox allows Stored XSS.This issue affects Firelight Lightbox: from n/a through <= 2.3.3.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Firelightwp
Products
Firelight Lightbox
CVE-2025-5035

Firelight Lightbox < 2.3.16 - Contributor+ Stored XSS

The Firelight Lightbox WordPress plugin before 2.3.16 does not sanitise and escape title attributes before outputting them in the page, which could allow users with a role as low as contributors to perform stored Cross-Site Scripting attacks.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Vendors
Firelightwp
Products
Firelight Lightbox
CVE-2025-3597

Firelight Lightbox < 2.3.15 - Contributor+ Stored XSS

The Firelight Lightbox WordPress plugin before 2.3.15 does not prevent users with post writing capabilities from executing arbitrary Javascript when the jQuery Metadata library is enabled. While this feature is meant to only be available to Pro version users, it can be activated in the free version too, making it theoretically exploitable there as well.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Firelightwp
Products
Firelight Lightbox