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CVE-2026-109973

MEDIUM 6.4 CVSS 3.1
Published
November 7, 2026
Last modified
November 7, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The Image Hover Effects Ultimate Visual Composer (Flipbox - Awesomes Flip Boxes Image Overlay) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'flip-box-image-upload-url-01-alt' parameter in versions up to, and including, 3.1.1. This is due to the plugin saving the image-alt field through sanitize_text_field() in Inc/Style22::register_child() (and Inc/Style18, 19, 20, 25, 29) — which preserves the double-quote character — and then concatenating the stored value into a double-quoted HTML attribute in Public_Render/Style22::default_render() (and the corresponding Style18/19/20/25/29 renderers) with no esc_attr() escaping. This makes it possible for authenticated attackers, with contributor-level access and above (when an administrator has delegated the plugin's 'Who can edit' capability via the plugin Settings page, or on multisite installations where even administrators lack unfiltered_html), to inject arbitrary web scripts in pages that will execute whenever a user accesses any page containing an affected [oxilab_flip_box] shortcode or block.

Affected WordPress components

  • Flipbox – Awesomes Flip Boxes Image Overlay Plugin · image-hover-effects-ultimate-visual-composer
    Confirmed match Active
    Up to and including 3.1.1
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • oxilab Flipbox – Awesomes Flip Boxes Image Overlay — Up to and including 3.1.1

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/image-hover-effects-ultimate-visual-composer/tags/3.1.0/Inc/Style22.php#L169
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/image-hover-effects-ultimate-visual-composer/tags/3.1.0/Includes/Admin/Menu.php#L53
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/image-hover-effects-ultimate-visual-composer/tags/3.1.0/Page/Admin_Render.php#L128
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/image-hover-effects-ultimate-visual-composer/tags/3.1.0/Public_Render/Style22.php#L58
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&old=3762680%40image-hover-effects-ultimate-visual-composer&new=3762680%40image-hover-effects-ultimate-visual-composer
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/c3403cd6-31ba-4c36-a60e-d3e5c038af78?source=cve
  • nvd.nist.gov Official NVD record