# CVE-2026-15097: Themify Builder Stored XSS in Slider Module height_slider field

Source: https://junglewise.ai/threats/cve-2026-15097-themify-builder-stored-xss-in-slider-module-height-slider-field  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-11. Updated: 2026-07-11  
License: CC BY 4.0 with a link back

CVE-2026-15097 · Severity: medium · CVSS 6.4 · Published 2026-07-11

The Themify Builder plugin for WordPress, which is used to design and build website layouts, contains a security flaw that allows users with contributor-level access to inject malicious scripts into pages. These scripts will automatically run in the browser of any visitor who views the affected page. This could lead to unauthorized actions being performed on behalf of site visitors or administrators, potentially compromising the website's integrity.

Technologies: [Themify Builder](https://junglewise.ai/threats/technologies/builder). Vendors: [Themify](https://junglewise.ai/threats/vendors/themify).

## Quick answers

**Is CVE-2026-15097 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-15097 being exploited in the wild.

**How severe is CVE-2026-15097?** Medium severity, with a CVSS score of 6.4, published 11 July 2026.

**Which products and versions are affected?** Themify Builder up to, and including, 7.7.6.

**Is there a fix for CVE-2026-15097?** 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-2026-15097 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-15097?** Check whether you run Themify Builder at an affected version. 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

The Themify Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on the 'height_slider' Slider Module field. This vulnerability exists in all versions up to and including 7.7.6. An authenticated attacker with contributor-level permissions or higher can inject arbitrary JavaScript into a page. Because the payload is stored in the database, the script executes in the context of any user's browser session when they visit the compromised page. The issue is tracked as CWE-79 and was addressed in subsequent updates.

## Affected products

- Themify Themify Builder up to, and including, 7.7.6

## Timeline

- 2026-07-11: disclosed
- 2026-07-11: advisory

## References

- [https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-builder-data-manager.php](https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-builder-data-manager.php)
- [https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-builder-data-manager.php](https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-builder-data-manager.php)
- [https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder-active.php](https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder-active.php)
- [https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/templates/template-slider.php](https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/templates/template-slider.php)
- [https://plugins.trac.wordpress.org/changeset?reponame=&old=3601964%40themify-builder&new=3601964%40themify-builder](https://plugins.trac.wordpress.org/changeset?reponame=&old=3601964%40themify-builder&new=3601964%40themify-builder)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/03721b29-7b26-4166-bba1-81614b412a09?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/03721b29-7b26-4166-bba1-81614b412a09?source=cve)

## Related threats

- [Themify Builder stored cross-site scripting in Custom Font field](https://junglewise.ai/threats/cve-2026-115869-the-themify-builder-plugin-for-wordpress-is-vulnerable-to-stored)
- [Themify Builder authorization bypass in styling handler](https://junglewise.ai/threats/cve-2026-75027-themify-builder-authorization-bypass-in-styling-handler)
- [themifyme Themify Builder reflected XSS](https://junglewise.ai/threats/cve-2026-57369-themifyme-themify-builder-reflected-xss)