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Medium · 6.4 CVE-2026-109989 EUVD-2026-103231GHSA-5jfw-8m7v-h73m

Themify Popup <= 1.4.7 - Authenticated (Author+) Stored Cross-Site Scripting via 'popup_width_unit' Parameter

Published Oct 17, 2026 · Updated Oct 18, 2026 · Assigned by Wordfence

Description

The Themify Popup plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'popup_width_unit' parameter in all versions up to, and including, 1.4.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

VendorProductAffectedFixed
themifyme Themify Popup ≤ 1.4.7 —

References