Skip to content
OpenAdvisories
Medium · 6.8 CVE-2026-84899 EUVD-2026-71867GHSA-gff8-vmj9-6526

VikWidgetsLoader < 1.12.0 - Contributor+ Stored XSS via Gutenberg Block class_suffix

Published Sep 5, 2026 · Updated Sep 6, 2026 · Assigned by WPScan

Description

The VikWidgetsLoader WordPress plugin before 1.12.0 does not sanitise or escape a block attribute before outputting it inside an inline script, allowing users with the Contributor role to store arbitrary JavaScript that executes in the browser of any user viewing the affected post, including the administrator who reviews the pending submission.

Affected products

VendorProductAffectedFixed
— VikWidgetsLoader 1.11.0 – < 1.12.0 1.12.0

References