Description
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.
Published: 2026-04-08
Score: 6.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Stored Cross‑Site Scripting
Action: Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 13 Apr 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 09 Apr 2026 08:30:00 +0000

Type Values Removed Values Added
First Time appeared Firelightwp
Firelightwp lightpress Lightbox
Wordpress
Wordpress wordpress
Vendors & Products Firelightwp
Firelightwp lightpress Lightbox
Wordpress
Wordpress wordpress

Wed, 08 Apr 2026 03:45:00 +0000

Type Values Removed Values Added
Description 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.
Title LightPress Lightbox <= 2.3.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'group' Shortcode Attribute
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


Subscriptions

Firelightwp Lightpress Lightbox
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-04-13T15:15:10.676Z

Reserved: 2026-03-18T13:23:42.883Z

Link: CVE-2026-4379

cve-icon Vulnrichment

Updated: 2026-04-13T15:12:13.345Z

cve-icon NVD

Status : Deferred

Published: 2026-04-08T04:17:09.967

Modified: 2026-04-27T19:04:22.650

Link: CVE-2026-4379

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-09T08:22:24Z

Weaknesses