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Vulnerability record · CVE-2026-75816 · published 6 September 2026

CVE-2026-75816: Improper authentication vulnerability

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.

9.8 CVSS 3.1 Critical EPSS 0.91% · top 41.5% CWE-287 · Improper authentication Deferred
9.8CVSS 3.1 base score
0.91%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
7References
8 Sep 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/fields/user/class-user-e
https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/actions/post.php#L
https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/actions/post.php#L
https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/classes/display.ph
https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/classes/submit.php
https://plugins.trac.wordpress.org/changeset/3664865/acf-frontend-form-element
https://www.wordfence.com/threat-intel/vulnerabilities/id/f1637a3b-7b0f-485d-9d19-4f711f8c671b?source=cve

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-75816), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.