# CVE-2026-96831: Themify Builder PHP object injection in contributor functionality

Source: https://junglewise.ai/threats/cve-2026-96831-contributor-php-object-injection-in-themify-builder-7-8-1  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-30. Updated: 2026-09-30  
License: CC BY 4.0 with a link back

CVE-2026-96831 · Severity: high · CVSS 8.8 · Published 2026-09-30

Themify Builder is a WordPress page builder plugin that allows website designers and contributors to create and modify page layouts. A PHP object injection vulnerability in versions 7.8.1 and earlier could allow attackers with contributor-level privileges to execute arbitrary code on the website, potentially leading to full site compromise and data theft.

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

## Quick answers

**Is CVE-2026-96831 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-96831 being exploited in the wild.

**How severe is CVE-2026-96831?** High severity, with a CVSS score of 8.8, published 30 September 2026.

**Which products and versions are affected?** Themify Builder <= 7.8.1.

**Is there a fix for CVE-2026-96831?** 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-2026-96831 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-96831?** 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

A PHP object injection vulnerability exists in Themify Builder's handling of serialized user input, allowing authenticated contributors to instantiate arbitrary PHP objects. The vulnerability requires contributor-level access to the WordPress site and is triggered through the builder's interface or API. Successful exploitation grants attackers remote code execution in the context of the WordPress application.

## Affected products

- Themify Themify Builder <= 7.8.1

## Timeline

- 2026-09-30: disclosed

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/themify-builder/vulnerability/wordpress-themify-builder-plugin-7-8-1-php-object-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/themify-builder/vulnerability/wordpress-themify-builder-plugin-7-8-1-php-object-injection-vulnerability?_s_id=cve)

## Related threats

- [Themify Builder stored cross-site scripting in visible shortcode](https://junglewise.ai/threats/cve-2026-111726-the-themify-builder-plugin-for-wordpress-is-vulnerable-to-stored)
- [Themify Builder authorization bypass in CSS and font management](https://junglewise.ai/threats/cve-2026-15407-themify-builder-authorization-bypass-in-css-and-font-management)
- [Themify Builder Stored XSS in Map Module b_width_map field](https://junglewise.ai/threats/cve-2026-15096-themify-builder-stored-xss-in-map-module-b-width-map-field)