CVE-2026-109989
Themify Popup <= 1.4.7 - Authenticated (Author+) Stored Cross-Site Scripting via 'popup_width_unit' Parameter
- State
- Published
- Severity
- 6.4 Medium
- Published
- Oct 17, 2026
- Updated
- Oct 18, 2026
- Reserved
- Oct 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Themify Popupthemifyme |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/da003985-7fb2-4f5b-bb70-6ec3578ef3e8?source=cve
- https://plugins.trac.wordpress.org/browser/themify-popup/tags/1.4.7/views/styles.php#L29
- https://plugins.trac.wordpress.org/browser/themify-popup/tags/1.4.7/includes/themify-metabox/includes/themify-metabox-core.php#L209
- https://plugins.trac.wordpress.org/browser/themify-popup/tags/1.4.7/includes/themify-metabox/includes/themify-metabox-core.php#L151
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3749602%40themify-popup&new=3749602%40themify-popup
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