# Themify Popup <= 1.4.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Popup Style Settings

- **ID:** WPSEC-2026-1145
- **Plugin:** Themify Popup (`themify-popup`), https://wordpress.org/plugins/themify-popup/
- **Affected versions:** all versions before 1.4.8
- **Fixed in:** 1.4.8 (Update to 1.4.8 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-16)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/themify-popup
- **Fix released:** 2026-10-16
- **Published:** 2026-10-17
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1145/

## Description

The Themify Popup plugin for WordPress is vulnerable to Stored Cross-Site Scripting via popup style settings such as the popup width/height unit and overlay color in all versions up to, and including, 1.4.7. This is due to insufficient input sanitization and output escaping: dropdown and color meta values were saved without validation and concatenated directly into an inline <style> block on the frontend. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts that will execute whenever a user accesses a page where the injected popup is displayed.

## References

- https://wpsec.com/vuln/WPSEC-2026-1145/
- https://plugins.svn.wordpress.org/themify-popup/tags/1.4.8/
- https://wordpress.org/plugins/themify-popup/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1145/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.