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CVE-2026-3347 PUBLISHED CVSS 5.5 MEDIUM

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.

EPSS 0.03% · 8.5th percentile

Risk Scores

CVSS v3.1
5.5
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
EPSS Score
0.03%
8.5th percentile

Affected Products

VendorProductVersions
arevicoMulti Functional Flexi Lightbox*, *, *

Timeline

References

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