Frontend Admin by DynamiApps <= 3.29.9 - Unauthenticated Privilege Escalation via 'item_id' Parameter

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-18432
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-16 05:16:48 UTC
Updated2026-08-16 05:16:48 UTC
DescriptionThe Frontend Admin by DynamiApps plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.29.9. The vulnerability exists because `ActionUser::conditions_logic()` gates the `current_user_can('edit_user', $user_id)` authorization check behind an `is_numeric()` test, causing the check to be skipped entirely when `$user_id` is a non-numeric string — a condition that can be induced by passing a crafted value such as `1one` through the unvalidated `item_id` parameter of the unauthenticated `wp_ajax_nopriv_frontend_admin/forms/change_form` AJAX endpoint. This makes it possible for attackers to escalate privileges to administrator by obtaining a server-signed `_acf_objects` payload carrying the non-numeric user ID, which WordPress subsequently coerces to integer 1 (the default administrator), allowing the attacker to overwrite that account's password or email address. Exploitation by unauthenticated users requires a public-facing frontend user form to be configured; in all other cases a subscriber-level account is sufficient.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

Problem Types: CWE-269 | CWE-269 CWE-269 Improper Privilege Management

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Shabti Frontend Admin By DynamiApps affected 3.29.9 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.3/main/frontend/f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.9/main/frontend/f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.9/main/frontend/f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.3/main/frontend/f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.3/main/frontend/f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.9/main/frontend/f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.3/main/frontend/f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.9/main/frontend/f... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/01404fad-7b5a-485a-b557-c608f... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.3/main/frontend/f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.9/main/frontend/f... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: 밥김국 (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-30T20:18:41.000ZVendor Notified
CNA2026-08-15T15:30:21.000ZDisclosed

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