CVE-2026-12536: ThemeFusion Avada Builder stored XSS in Module Title parameter

CVE-2026-12536 · Severity: medium · CVSS 6.4 · Published 2026-07-13

The Avada (Fusion) Builder plugin, a popular website-building tool for WordPress, contains a security flaw that allows users with basic contributor access to inject malicious scripts into website pages. When other users, including site administrators or visitors, view these compromised pages, the hidden scripts will execute automatically in their browsers. This could lead to unauthorized actions being performed on behalf of other users or the theft of sensitive session information.

Technologies: ThemeFusion Avada Builder. Vendors: ThemeFusion.

Quick answers

Is CVE-2026-12536 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-12536 being exploited in the wild.
How severe is CVE-2026-12536?
Medium severity, with a CVSS score of 6.4, published 13 July 2026.
Which products and versions are affected?
ThemeFusion Avada (Fusion) Builder up to, and including, 3.15.5.
Is there a fix for CVE-2026-12536?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-12536 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-12536?
Check whether you run ThemeFusion Avada Builder. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Stored Cross-Site Scripting (XSS) vulnerability exists in the Avada (Fusion) Builder plugin for WordPress due to inadequate sanitization and escaping of the 'Module Title' parameter. Authenticated attackers with Contributor-level permissions or higher can inject arbitrary JavaScript into this parameter. Because the input is stored in the database and rendered without proper security controls, the script executes in the context of any user who views the affected page. This vulnerability is tracked as CVE-2026-12536 and affects all versions up to 3.15.5.

Affected products

  • ThemeFusion Avada (Fusion) Builder up to, and including, 3.15.5

Timeline

  • 2026-07-13: disclosed
  • 2026-07-13: advisory

References

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