LightPress Lightbox <= 2.3.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'group' Shortcode Attribute
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 LightPress Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `group` attribute in the `[gallery]` shortcode in all versions up to, and including, 2.3.4. This is due to the plugin modifying gallery shortcode output to include the `group` attribute value without proper escaping. 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.
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 | LightPress Lightbox | up to 2.3.4 | — | No fix listed | CNA |
- LightPress Lightbox Vendorfirelightwp Affected up to 2.3.4 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4379
- 2026-10-03 Alias added: GHSA-2gmw-2prf-4jf5
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2bed4818-70c5-40b7-8d8d-f43f3baa0f3d?source=cve
- https://plugins.trac.wordpress.org/browser/wp-jquery-lightbox/tags/2.3.4/lightboxes/wp-jquery-lightbox/class-wp-jquery-lightbox.php#L395
- https://plugins.trac.wordpress.org/browser/wp-jquery-lightbox/tags/2.3.4/lightboxes/wp-jquery-lightbox/class-wp-jquery-lightbox.php#L376
- https://plugins.trac.wordpress.org/changeset?old_path=/wp-jquery-lightbox/tags/2.3.4&new_path=/wp-jquery-lightbox/tags/2.3.5
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-2026-05662 Cross-site scripting in firelightwp Firelight Lightbox 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-2026-4379 · CVE Program
- CVE-2026-4379 · NVD
- FIRST EPSS
- GHSA-2gmw-2prf-4jf5 · 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