# CVE-2026-93937: ThemeREX Hygia PHP object injection vulnerability

Source: https://junglewise.ai/threats/cve-2026-93937-deserialization-of-untrusted-data-vulnerability-in-themerex-group  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-10. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-93937 · Severity: critical · CVSS 9.8 · Published 2026-10-10

ThemeREX Group's Hygia is a WordPress theme used to build custom websites. An unauthenticated attacker can inject malicious PHP objects into the theme, allowing them to execute arbitrary code on the web server and take full control of any site using the vulnerable theme. This vulnerability affects all versions through 1.21.0 with no official patch currently available.

Vendors: [ThemeREX Group](https://junglewise.ai/threats/vendors/themerex-group).

## Quick answers

**Is CVE-2026-93937 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-93937 being exploited in the wild.

**How severe is CVE-2026-93937?** Critical severity, with a CVSS score of 9.8, published 10 October 2026.

**Which products and versions are affected?** ThemeREX Group Hygia through 1.21.0.

**Is there a fix for CVE-2026-93937?** No fixed version is recorded yet. Patchstack has issued a mitigation rule to block attacks until an official patch becomes available. Disable or replace the theme immediately and contact your hosting provider or web developer if you cannot apply updates directly. 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-2026-93937 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-93937?** Check whether you run ThemeREX Group Hygia 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.

## How to fix


Patchstack has issued a mitigation rule to block attacks until an official patch becomes available. Disable or replace the theme immediately and contact your hosting provider or web developer if you cannot apply updates directly.

## Technical details

A PHP object injection vulnerability in ThemeREX Hygia theme through version 1.21.0 allows unauthenticated attackers to manipulate data processing and trigger arbitrary code execution on the server. The vulnerability stems from improper deserialization of untrusted data, enabling object injection attacks. No official patch has been released as of the advisory date.

## Affected products

- ThemeREX Group Hygia through 1.21.0

## Timeline

- 2026-10-08: disclosed
- 2026-10-10: advisory

## References

- [https://themeforest.net/](https://themeforest.net/)
- [https://patchstack.com/database/wordpress/theme/hygia/vulnerability/wordpress-hygia-theme-1-21-0-php-object-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/theme/hygia/vulnerability/wordpress-hygia-theme-1-21-0-php-object-injection-vulnerability?_s_id=cve)