CVE-2026-6226: Software Security Vulnerability Vulnerability
HIGHCVE-2026-6226 is a HIGH (CVSS 8.8) security vulnerability vulnerability (CWE-269: Improper Privilege Management) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-6226 at a Glance
Security Impact
CVSS: 8.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2026-6226
To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:treeHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-6226, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:treeAnalyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.
Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-269: Improper Privilege Management, where the product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
References
Frequently Asked Questions
What is CVE-2026-6226?
Which Software versions are affected?
What version fixes CVE-2026-6226?
What is the CVSS score of CVE-2026-6226?
What CWE is associated with CVE-2026-6226?
How can I check Maven dependencies for CVE-2026-6226?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-mfvv-f9h5-2mqr",
"modified" : "2026-05-28T09:31:20Z",
"published" : "2026-05-28T09:31:19Z",
"aliases" : [ "CVE-2026-6226" ],
"details" : "The Frontend Admin by DynamiApps plugin for WordPress is vulnerable to unauthenticated privilege escalation in versions up to and including 3.29.2. This is due to insecure form submission handling that accepts arbitrary form definitions from user input instead of securely loading them from the backend. When $_POST['_acf_form'] is an array (rather than a form ID), the validate_form() function bypasses database lookup and directly processes the attacker-controlled structure. The create_record() function preserves attacker-supplied record data if present, and the user action's run() function falls back to attacker-controlled field definitions from $form['fields'] when legitimate fields cannot be found. The role field's pre_update_value() validation reads $field['role_options'] from this attacker-controlled definition, allowing an attacker to specify ['administrator'] as an allowed role and bypass the security check. This makes it possible for unauthenticated attackers to create administrator accounts by injecting a custom form configuration with a spoofed role field.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-6226"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.28.33/main/frontend/fields/user/class-role.php#L107"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.28.33/main/frontend/forms/actions/user.php#L458"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.28.33/main/frontend/forms/classes/display.php#L245"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.28.33/main/frontend/forms/classes/submit.php#L124"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/trunk/main/frontend/fields/user/class-role.php#L107"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/trunk/main/frontend/forms/actions/user.php#L458"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/trunk/main/frontend/forms/classes/display.php#L245"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/trunk/main/frontend/forms/classes/submit.php#L124"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3525193%40acf-frontend-form-element&new=3525193%40acf-frontend-form-element&sfp_email=&sfph_mail="
}, {
"type" : "WEB",
"url" : "https://www.wordfence.com/threat-intel/vulnerabilities/id/123e1758-3384-4ea7-96dd-d6adcce40392?source=cve"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-269" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-05-28T09:16:47Z"
}
}