Stored cross-site scripting in Responsive Lightbox & Gallery
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- 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 Responsive Lightbox & Gallery plugin for WordPress by dfactory is affected in all versions up to and including 2.7.9. Insufficient input sanitization and output escaping of the comment parameter let injected script content persist on pages (CWE-79). An authenticated attacker with editor-level access or above can inject scripts that run in visitors' browsers, but only if the Comments lightbox setting is enabled, a moderator approves the injected comment, and a visitor clicks the affected image.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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 makes it possible for 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.
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
Remediation
The sources list no fixed version for Responsive Lightbox & Gallery.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-10 Threatist record created from CVE-2026-103897
- 2026-10-10 Alias added: GHSA-c385-5282-v7jj
- 2026-10-11 CISA SSVC decision points changed
References
Other 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5bb2a893-d254-42bc-8b50-2a88306dbbd7?source=cve
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-frontend.php#L410
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-frontend.php#L409
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-frontend.php#L1981
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/includes/class-frontend.php#L488
- https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.7.9/assets/glightbox/glightbox.js#L1489
- https://plugins.trac.wordpress.org/changeset/3729072
- https://plugins.trac.wordpress.org/changeset/3694843/responsive-lightbox/trunk/includes/class-frontend.php
More dFactory vulnerabilities
- TI-2025-03296 Responsive Lightbox & Gallery < 2.5.1 - Contributor+ Stored XSS CVSS 3.1MEDIUM 6.8
- TI-2025-04567 Responsive Lightbox & Gallery < 2.5.2 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2024-29513 WordPress Responsive Lightbox & Gallery plugin <= 2.4.7 - Broken Access Control vulnerability CVSS 3.1CRITICAL 9.8
- TI-2024-20628 WordPress Responsive Lightbox & Gallery plugin <= 2.4.6 - Broken Access Control vulnerability CVSS 3.1HIGH 8.8
- TI-2026-40435 WordPress Responsive Lightbox plugin <= 2.7.6 - Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
- TI-2025-31910 WordPress Download Attachments plugin <= 1.3.1 - Insecure Direct Object References (IDOR) vulnerability CVSS 3.1MEDIUM 5.3
Sources
- CVE-2026-103897 · CVE Program
- CVE-2026-103897 · NVD
- FIRST EPSS
- GHSA-c385-5282-v7jj · 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