Medium 6.4Published Jul 23, 2026

CVE-2026-6454Firelight Lightbox <= 2.3.20 - Authenticated (Contributor+) Stored DOM Cross-Site Scripting via PDF beforeLoad 'href' Attribute

Updated under an hour ago (Oct 28, 2026, 12:23 AM ET)

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It affects firelightwp Firelight Lightbox. Add what you run to find out whether that includes you.

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Every CVE for firelightwp Firelight Lightbox

Exploited in the last 30 days

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: 6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Wordfence
NVD analysis: Deferred
Record last updated: Jul 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

firelightwp Firelight Lightbox firelightwp:firelight_lightbox (from the name)	through 2.3.20	CNA record

References

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/8396c124-9c72-4801-8964-1cd5fbd52d20?source=cve
https://plugins.trac.wordpress.org/browser/easy-fancybox/trunk/inc/fancybox-2.php#L322
https://plugins.trac.wordpress.org/browser/easy-fancybox/trunk/fancybox/2.2.0/jquery.fancybox.js#L280
https://plugins.trac.wordpress.org/browser/easy-fancybox/trunk/fancybox/2.2.0/jquery.fancybox.js#L1235
https://plugins.trac.wordpress.org/browser/easy-fancybox/tags/2.3.18/inc/fancybox-2.php#L322
https://plugins.trac.wordpress.org/browser/easy-fancybox/tags/2.3.18/fancybox/2.2.0/jquery.fancybox.js#L280
https://plugins.trac.wordpress.org/browser/easy-fancybox/tags/2.3.18/fancybox/2.2.0/jquery.fancybox.js#L1235
https://plugins.trac.wordpress.org/changeset?reponame=&old=3610643%40easy-fancybox&new=3610643%40easy-fancybox

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.