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.

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History

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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-04-08T02:25:40.372Z

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

Link: CVE-2026-4379

cve-icon Vulnrichment

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cve-icon NVD

Status : Received

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

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

Link: CVE-2026-4379

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses