CVE-2026-3347
The Multi Functional Flexi Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the parameter in all versions up to, and including, 1.2 due t…
Published Mar 21, 2026 · updated Jun 17, 2026
The Multi Functional Flexi Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the parameter in all versions up to, and including, 1.2 due to insufficient input sanitization and output escaping. This is due to the sanitize callback returning user input without any sanitization, and the stored value being output in the 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.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Mar 21, 2026 · NIST NVD
Detected
The Multi Functional Flexi Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the parameter in all versions up to, and including, 1.2 due to insufficient input sanitization and output escaping. This is due to the sanitize callback returning user input without any sanitization, and the stored value being output in the function without escaping. This makes it possible for
Jun 17, 2026 · NIST NVD
Updated
The Multi Functional Flexi Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the parameter in all versions up to, and including, 1.2 due to insufficient input sanitization and output escaping. This is due to the sanitize callback returning user input without any sanitization, and the stored value being output in the function without escaping. This makes it possible for
Sources
- CVE.orgVulnerability recordCVE-2026-3347
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-3347
The Multi Functional Flexi Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 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()
nvd.nist.gov