The Multi Functional Flexi Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `arv_lb[message]` parameter in all versions up to, and including, 1.2 due to insufficient input sanitization and output escaping. This is due to the `arv_lb_options_val()` sanitize callback returning user input without any sanitization, and the stored `message` value being output in the `genLB()` function without escaping. This makes it possible for authenticated attackers, with Administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses a page or post with the lightbox enabled.

Subscriptions

No data.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sat, 21 Mar 2026 05:30:00 +0000

Type Values Removed Values Added
Description The Multi Functional Flexi Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `arv_lb[message]` parameter in all versions up to, and including, 1.2 due to insufficient input sanitization and output escaping. This is due to the `arv_lb_options_val()` sanitize callback returning user input without any sanitization, and the stored `message` value being output in the `genLB()` function without escaping. This makes it possible for authenticated attackers, with Administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses a page or post with the lightbox enabled.
Title Multi Functional Flexi Lightbox <= 1.2 - Authenticated (Admin+) Stored Cross-Site Scripting via 'message' Parameter
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-03-21T03:26:57.846Z

Reserved: 2026-02-27T16:20:45.950Z

Link: CVE-2026-3347

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-21T04:17:21.730

Modified: 2026-03-21T04:17:21.730

Link: CVE-2026-3347

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses