CVE-2026-6642: Software Security Vulnerability Vulnerability
MODERATECVE-2026-6642 is a MODERATE (CVSS 6.4) security vulnerability vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-6642 at a Glance
Security Impact
CVSS: 6.4
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:C/C:L/I:L/A:N).
How to Fix CVE-2026-6642
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-2026-6642, 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. 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-2026-6642?
Which Software versions are affected?
What version fixes CVE-2026-6642?
What is the CVSS score of CVE-2026-6642?
What CWE is associated with CVE-2026-6642?
How can I check Maven dependencies for CVE-2026-6642?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-jr9v-hfwr-qhgm",
"modified" : "2026-09-11T09:31:23Z",
"published" : "2026-09-11T09:31:23Z",
"aliases" : [ "CVE-2026-6642" ],
"details" : "The Media Library Assistant plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the bulk edit preset export/import mechanism in versions up to and including 3.35. This is due to insufficient output escaping on preset field values when they are rendered in HTML attribute contexts in the mla_generate_bulk_edit_form_fieldsets() function and mla-bulk-edit-fieldsets.tpl template. While wp_kses() filtering is applied during preset export for users without unfiltered_html capability, this does not prevent attribute injection attacks since the malicious payload consists of quotes and HTML attributes rather than HTML tags. When preset values are retrieved and rendered, they are directly assigned to template variables without esc_attr() escaping and then inserted into input element value attributes via simple string replacement. This makes it possible for authenticated attackers, with Author-level access and above (upload_files capability), to inject arbitrary web scripts that execute when an administrator imports the poisoned preset and the targeted input field receives focus.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-6642"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/media-library-assistant/tags/3.35/includes/class-mla-ajax.php#L395"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/media-library-assistant/tags/3.35/includes/class-mla-edit-media.php#L647-L651"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/media-library-assistant/tags/3.35/tpls/mla-bulk-edit-fieldsets.tpl#L70"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/media-library-assistant/trunk/includes/class-mla-ajax.php#L395"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/media-library-assistant/trunk/includes/class-mla-edit-media.php#L647-L651"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/browser/media-library-assistant/trunk/tpls/mla-bulk-edit-fieldsets.tpl#L70"
}, {
"type" : "WEB",
"url" : "https://plugins.trac.wordpress.org/changeset/3512155"
}, {
"type" : "WEB",
"url" : "https://www.wordfence.com/threat-intel/vulnerabilities/id/6e45dc8a-b777-4a49-b1b1-c59ffa75f5b4?source=cve"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-79" ],
"severity" : "MODERATE",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-09-11T08:16:48Z"
}
}