Cross-site scripting in firelightwp Firelight Lightbox
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| firelightwp | Firelight Lightbox | up to 2.3.20 | — | No fix listed | CNA |
- Firelight Lightbox Vendorfirelightwp Affected up to 2.3.20 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-6454
- 2026-10-03 Alias added: GHSA-ccv6-5mc2-jm5q
References
Other 8
- 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
More firelightwp vulnerabilities
- TI-2025-03164 Firelight Lightbox < 2.3.15 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.9
- TI-2025-04514 Firelight Lightbox < 2.3.16 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2024-04662 Cross-site scripting in extendthemes Colibri Page Builder CVSS 3.1MEDIUM 6.4
- TI-2026-03814 LightPress Lightbox <= 2.3.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'group' Shortcode Attribute CVSS 3.1MEDIUM 6.4
- TI-2024-05041 WP jQuery Lightbox <= 1.5.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via title Attribute CVSS 3.1MEDIUM 6.4
- TI-2024-33892 WordPress Firelight Lightbox plugin <= 2.3.3 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 5.9
Sources
- CVE-2026-6454 · CVE Program
- CVE-2026-6454 · NVD
- FIRST EPSS
- GHSA-ccv6-5mc2-jm5q · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences