# CVE-2026-66638: Frontend Admin by DynamiApps cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-66638-frontend-admin-by-dynamiapps-cross-site-scripting  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-18. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-66638 · Severity: medium · CVSS 6.5 · Published 2026-08-18

Frontend Admin by DynamiApps is a WordPress plugin that allows website administrators to manage site content and settings from the frontend. A cross-site scripting (XSS) vulnerability in versions 3.29.10 and earlier allows contributors to inject malicious scripts that could steal visitor data or hijack user accounts. Exploitation requires a privileged user with contributor-level access to perform an action such as clicking a link or submitting a form.

Technologies: [DynamiApps Frontend Admin](https://junglewise.ai/threats/technologies/frontend-admin). Vendors: [DynamiApps](https://junglewise.ai/threats/vendors/dynamiapps).

## Quick answers

**Is CVE-2026-66638 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-66638 being exploited in the wild.

**How severe is CVE-2026-66638?** Medium severity, with a CVSS score of 6.5, published 18 August 2026.

**Which products and versions are affected?** DynamiApps Frontend Admin <=3.29.10.

**Is there a fix for CVE-2026-66638?** A patch was published on 2026-08-18: Fixed in version 3.29.11 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-66638 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-66638?** Check whether you run DynamiApps Frontend Admin 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

This is a stored cross-site scripting (XSS) vulnerability in the Frontend Admin by DynamiApps WordPress plugin affecting versions up to 3.29.10. The vulnerability exists due to insufficient input validation or output encoding in the plugin's form handling or data processing logic. An authenticated attacker with Contributor role or higher privileges can inject malicious JavaScript that will execute in the context of an administrator's browser when they interact with the crafted content. The attack requires user interaction (e.g., clicking a link or visiting a crafted page) and results in potential theft of session cookies, sensitive data, or account takeover. The vulnerability has been patched in version 3.29.11.

## Affected products

- DynamiApps Frontend Admin <=3.29.10

## Timeline

- 2026-07-09: disclosed: Reported by Ananda Dhakal (Patchstack)
- 2026-08-18: advisory: Published by Patchstack and NVD
- 2026-08-18: patched: Fixed in version 3.29.11

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/acf-frontend-form-element/vulnerability/wordpress-frontend-admin-by-dynamiapps-plugin-3-29-10-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/acf-frontend-form-element/vulnerability/wordpress-frontend-admin-by-dynamiapps-plugin-3-29-10-cross-site-scripting-xss-vulnerability?_s_id=cve)

## Related threats

- [DynamiApps Frontend Admin stored XSS vulnerability](https://junglewise.ai/threats/cve-2026-119504-improper-neutralization-of-input-during-web-page-generation)
- [DynamiApps Frontend Admin privilege escalation in acf-frontend-form-element](https://junglewise.ai/threats/cve-2026-119506-incorrect-privilege-assignment-vulnerability-in-dynamiapps)
- [Frontend Admin by DynamiApps SQL injection](https://junglewise.ai/threats/cve-2026-42722-administrator-sql-injection-in-frontend-admin-by-dynamiapps-3-29)
- [Frontend Admin by DynamiApps stored XSS via kses bypass](https://junglewise.ai/threats/cve-2026-6243-the-frontend-admin-by-dynamiapps-plugin-for-wordpress-is)
- [DynamiApps Frontend Admin authentication bypass to account takeover](https://junglewise.ai/threats/cve-2026-75816-dynamiapps-frontend-admin-authentication-bypass-to-account)