The Flipbox Addon for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Flipbox widget's button URL `custom_attributes` field in all versions up to, and including, 2.1.1 due to insufficient validation of custom attribute names. Specifically, the plugin uses `esc_html()` on the attribute name which does not prevent event handler attributes (e.g., `onmouseover`, `onclick`). 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.
CVE-2026-6048 is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin Flipbox Addon for Elementor. It affects Versions up to 2.0.8 and is fixed in 2.1.2.
CVE-2026-6048 is tracked for the Plugin Flipbox Addon for Elementor as medium severity with CVSS 6.4. The affected range is Versions up to 2.0.8. Update Flipbox Addon for Elementor to 2.1.2 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
ultimate-flipbox-addon-for-elementor
View on wordpress.org
|
| CVE | CVE-2026-6048 |
| Patched Versions |
2.1.2
|
| Affected Versions |
Versions up to 2.0.8
|
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