CVE-2026-75816: Auth Bypass (CVSS 9.8)

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.

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CVSS v3.1 Score

9.8

CRITICAL

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

EPSS — Exploit Prediction

0.0050

Probability of exploitation

0.42%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-287 Improper Authentication

References

Other References

https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/fields/user/class-user-email.php#L127 https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/actions/post.php#L1001 https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/actions/post.php#L1224 https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/classes/display.php#L26 https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/classes/submit.php#L125 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

Frequently Asked Questions

What is CVE-2026-75816? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-75816? +

CVE-2026-75816 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0050, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-75816? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-75816