CVE-2026-75816

Frontend Admin by DynamiApps <= 3.29.12 - Unauthenticated Account Takeover via '_acf_objects' Object Identifier

2026-09-05 13:59
thevietronin

Strategic Overview

Status
Patched in 3.29.13
Affected Plugin
Frontend Admin by DynamiApps
Affected Version
<= 3.29.12
CVSS
9.8Critical
Weakness type
CWE-287 · Improper Authentication
CVE
CVE-2026-75816
View all Frontend Admin by DynamiApps vulnerabilities

At a glance

CVE-2026-75816 is a critical-severity Improper Authentication vulnerability in the Frontend Admin by DynamiApps WordPress plugin, affecting versions <= 3.29.12. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 3.29.13; sites on affected versions should update now. Disclosed September 2026, reported by thevietronin.

Vulnerability Overview

The Frontend Admin by DynamiApps plugin for WordPress is vulnerable to Authentication Bypass to Account Takeover in all versions up to, and including, 3.29.12. This is due to the pre_update_value function lacking any capability or ownership check, and ActionPost::conditions_logic() short-circuiting its current_user_can('edit_post') authorization gate whenever the post ID is non-numeric — such as the string user_1 — allowing unauthenticated form submissions to be routed to arbitrary user records without restriction. This makes it possible for unauthenticated attackers to overwrite any user's registered email address, including an administrator's, and then leverage WordPress's native password-reset flow to fully take over the targeted account.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-287: Improper Authentication

Frontend Admin by DynamiApps <= 3.29.12 carries this weakness at edit_post, and reaching it takes no account at all. Improper authentication means the mechanism that proves who a caller is can be satisfied without the secret it was supposed to require.

An attacker authenticates as another user — administrators included — without ever knowing a password, so password policies and login rate limits never come into play. For Frontend Admin by DynamiApps the fix is 3.29.13: builds <= 3.29.12 are affected, anything from 3.29.13 onward is not.

Remediation

Update to version 3.29.13, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Frontend Admin by DynamiApps 3.29.13 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-75816https://www.wordfence.com/threat-intel/vulnerabilities/id/f1637a3b-7b0f-485d-9d19-4f711f8c671bhttps://nvd.nist.gov/vuln/detail/CVE-2026-75816

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C