# CVE-2026-65439: Themefic Ultimate Addons for Contact Form 7 unauthenticated XSS

Source: https://junglewise.ai/threats/cve-2026-65439-themefic-ultimate-addons-for-contact-form-7-unauthenticated-xss  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-27. Updated: 2026-07-27  
License: CC BY 4.0 with a link back

CVE-2026-65439 · Severity: high · CVSS 7.1 · Published 2026-07-27

Ultimate Addons for Contact Form 7 is a WordPress plugin that extends the functionality of the popular Contact Form 7 tool. A security vulnerability in this plugin allows unauthenticated attackers to inject malicious scripts into the website. If a site administrator or visitor interacts with a specially crafted link or page, the attacker could redirect users to malicious sites, display unauthorized advertisements, or potentially hijack user sessions.

Vendors: [Themefic](https://junglewise.ai/threats/vendors/themefic).

## Quick answers

**Is CVE-2026-65439 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-65439 being exploited in the wild.

**How severe is CVE-2026-65439?** High severity, with a CVSS score of 7.1, published 27 July 2026.

**Which products and versions are affected?** Themefic Ultimate Addons for Contact Form 7 <=3.5.45.

**Is there a fix for CVE-2026-65439?** A patch was published on 2026-07-27: Version 3.5.46 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-65439 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-65439?** Check whether you run Themefic Ultimate Addons for Contact Form 7 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 Cross-Site Scripting (XSS) vulnerability exists in the Ultimate Addons for Contact Form 7 plugin for WordPress due to improper neutralization of input during web page generation (CWE-79). The flaw allows an unauthenticated remote attacker to inject arbitrary JavaScript or HTML payloads. Exploitation requires a victim (typically a privileged user) to perform an action, such as clicking a malicious link or visiting a crafted page (User Interaction required). Successful exploitation can lead to unauthorized script execution in the context of the victim's browser, potentially resulting in session theft or site defacement. The issue is resolved in version 3.5.46.

## Affected products

- Themefic Ultimate Addons for Contact Form 7 <=3.5.45

## Timeline

- 2026-06-27: disclosed: Reported by Nguyen Ba Khanh
- 2026-07-27: advisory
- 2026-07-27: patched: Version 3.5.46 released to address the vulnerability

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/ultimate-addons-for-contact-form-7/vulnerability/wordpress-ultimate-addons-for-contact-form-7-plugin-3-5-45-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/ultimate-addons-for-contact-form-7/vulnerability/wordpress-ultimate-addons-for-contact-form-7-plugin-3-5-45-cross-site-scripting-xss-vulnerability?_s_id=cve)

## Related threats

- [Ultimate Addons for Contact Form 7 Cross Site Scripting](https://junglewise.ai/threats/cve-2026-95586-contributor-cross-site-scripting-xss-in-ultimate-addons-for)