# CVE-2026-111838: ThemeHunk Customizer reflected cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-111838-improper-neutralization-of-input-during-web-page-generation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2026-111838 · Severity: high · CVSS 7.1 · Published 2026-10-21

ThemeHunk Customizer is a WordPress plugin that allows site customization. A reflected cross-site scripting (XSS) vulnerability in the plugin allows attackers to inject malicious scripts that execute in visitors' browsers, potentially stealing session cookies, hijacking accounts, or redirecting users to malicious sites. The attack requires user interaction such as clicking a malicious link.

Vendors: [ThemeHunk](https://junglewise.ai/threats/vendors/themehunk).

## Quick answers

**Is CVE-2026-111838 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-111838 being exploited in the wild.

**How severe is CVE-2026-111838?** High severity, with a CVSS score of 7.1, published 21 October 2026.

**Which products and versions are affected?** ThemeHunk Customizer up to 2.8.7.

**Is there a fix for CVE-2026-111838?** Yes: fixed in 2.8.8. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-111838 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-111838?** Check whether you run ThemeHunk Customizer 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

- Fixed in 2.8.8

## Technical details

The plugin fails to properly sanitize user input during web page generation, allowing reflected XSS attacks. An unauthenticated attacker can craft a malicious URL containing injected JavaScript that executes in the context of an affected user's browser session. The vulnerability affects ThemeHunk Customizer up to version 2.8.7 and is fixed in version 2.8.8.

## Affected products

- ThemeHunk Customizer up to 2.8.7

## Timeline

- 2026-10-15: disclosed
- 2026-10-19: advisory
- 2026-10-21: patched

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/themehunk-customizer/vulnerability/wordpress-themehunk-customizer-plugin-2-8-7-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/themehunk-customizer/vulnerability/wordpress-themehunk-customizer-plugin-2-8-7-cross-site-scripting-xss-vulnerability?_s_id=cve)