External risk intelligence

Frontend Admin by DynamiApps WordPress Plugin Authentication Bypass Leading to Account Takeover

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-75816

The vulnerability exists in a WordPress plugin that handles frontend form submissions. WordPress sites are commonly deployed as public-facing web applications, and frontend plugins are designed to be reachable by internet users to process submissions, making this an externally accessible web-based attack surface.

Authentication Bypass

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability in the Frontend Admin by DynamiApps WordPress plugin allows unauthenticated attackers to bypass security checks and take over any user account, including administrator accounts, by overwriting their email addresses and initiating a password reset. This issue affects all versions of the plugin up to and including 3.29.12.

  • Unauthenticated users can take over accounts.
  • Critical for controlling website access.
  • Confirm plugin relevance and verify exposure.

Attack Path

How an attacker could exploit the issue

An attacker can bypass authentication to take over any user account by submitting a crafted form. This attack begins with unauthenticated access to a vulnerable WordPress site. The attacker targets the Frontend Admin by DynamiApps plugin, specifically its ability to update user records. By providing a non-numeric post ID, the attacker can trick the plugin into processing a form submission that changes a user's email address. Once the email is changed, the attacker can then initiate a password reset to gain full control of the account.

  • No prior access required to initiate.
  • Submitting a specially crafted form.
  • Account takeover via email and password reset.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated attacker to change the email address associated with any user account on a WordPress site, including administrator accounts. This could then be used to initiate a password reset and gain full control of the targeted account.

  • User account email addresses.
  • Unauthenticated form submissions bypass checks.
  • Account takeover via password reset.

Operational Fix

Recommended remediation, mitigation, and detection steps

Website administrators and application owners are responsible for addressing this vulnerability, which allows unauthenticated attackers to bypass authentication and take over accounts by overwriting user email addresses and exploiting the password reset flow. The first practical step is to identify all instances of the affected WordPress plugin, assess their exposure and business criticality, and then prioritize remediation efforts.

  • Ownership: WordPress administrators and plugin owners.
  • Verify first: Plugin presence and external reachability.
  • Action: Plan and coordinate maintenance for remediation.

Supplementary metadata

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Frequently asked questions

What is the Frontend Admin by DynamiApps plugin for WordPress?

It is an add-on for WordPress websites designed to let site visitors interact with backend content through frontend forms. Users rely on this tool to enable features like user registration, profile editing, or post submissions directly from the website's public-facing pages, rather than requiring users to log into the WordPress dashboard.

How does CVE-2026-75816 lead to account takeover?

The flaw is an Improper Authentication issue, categorized as CWE-287. Because the plugin fails to verify if a user has permission to change account details, an attacker can submit a form that overwrites any user's registered email address. Once the email is changed, the attacker triggers the native WordPress password-reset process to gain full control of the targeted account.

Does the plugin trigger this vulnerability even if I do not use forms?

No. The vulnerability specifically requires the submission of a form containing a non-numeric identifier, such as 'user_1'. The exploit path relies on the plugin's logic misinterpreting this specific input to bypass security gates. If your site does not use the plugin's form functionality, this specific attack vector remains inactive.

Why is this plugin considered an internet-facing risk?

According to Halo Surface Signal, this plugin is designed to process frontend form submissions, meaning it is intended to be reachable by any visitor on the internet. Because WordPress sites are typically public, an attacker can interact with the vulnerable code from anywhere, without needing an existing account or credentials to launch the attack.

What should I do if I have this plugin installed?

First, verify if your WordPress site uses the Frontend Admin by DynamiApps plugin. If present, assess the business criticality of the affected forms. Since this is a critical authentication flaw, prioritize planning maintenance or updates to remediate the issue, as the plugin currently allows unauthorized changes to sensitive user information.

References