EUVD-2026-14175
GHSA-687q-32c6-8x68
GHSA-gv9p-wq55-477w
GHSA-p747-qc5p-773r
GHSA-wc83-79hj-hpmq
GHSA-xggw-g9pm-9qhh
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Lifecycle Timeline
3Description
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.
Analysis
A Stored Cross-Site Scripting vulnerability exists in the Multi Functional Flexi Lightbox WordPress plugin (versions up to and including 1.2) that allows authenticated administrators to inject arbitrary JavaScript code via the arv_lb[message] parameter. The vulnerability stems from insufficient input sanitization in the arv_lb_options_val() callback function and missing output escaping in the genLB() function, enabling malicious scripts to execute in the browsers of any user viewing pages or posts with the lightbox enabled. …
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Remediation
Within 30 days: Identify affected systems running all and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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External POC / Exploit Code
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