CVE-2026-6641
Received Received - Intake

Stored XSS in Media Library Assistant WordPress Plugin

Publication date: 2026-09-11

Last updated on: 2026-09-11

Assigner: Wordfence

Description
The Media Library Assistant plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'mla_gallery' shortcode in versions up to and including 3.35. This is due to insufficient input sanitization and output escaping on the mla_link_href parameter when mla_output is set to 'paginate_links', where the _paginate_links() function processes the value through mla_process_shortcode_parameter() and _replace_query_parameter() without proper URL escaping, then outputs it directly in href attributes without applying esc_url(). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2026-09-11
Last Modified
2026-09-11
Generated
2026-09-11
AI Q&A
2026-09-11
EPSS Evaluated
N/A
NVD
CVE-2026-6641
EUVD
EUVD-2026-76007

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
media_library_assistant media_library_assistant to 3.35 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 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.

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Executive Summary

The Media Library Assistant WordPress plugin has a stored cross-site scripting (XSS) vulnerability in versions up to 3.35. It occurs via the 'mla_gallery' shortcode due to improper input sanitization and output escaping in the mla_link_href parameter when mla_output is set to 'paginate_links'. The flaw allows authenticated attackers with contributor-level access or higher to inject malicious scripts into pages.

Detection Guidance

Check for the Media Library Assistant plugin version 3.35 or lower in your WordPress installation. Inspect pages or posts using the 'mla_gallery' shortcode for suspicious scripts in href attributes, particularly where mla_output is set to 'paginate_links'.

Impact Analysis

An attacker could inject malicious scripts into your WordPress site. When users access the infected page, the scripts execute in their browsers, potentially stealing session cookies, redirecting to phishing sites, or performing actions on behalf of the user. This requires contributor-level access or higher to exploit.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's integrity and confidentiality principles. For HIPAA, it may expose protected health information if exploited. Compliance risks include data breaches, loss of user trust, and potential regulatory penalties.

Mitigation Strategies

Update the Media Library Assistant plugin to the latest version. If an update is unavailable, disable the plugin temporarily. Review user roles with contributor-level access or higher for unauthorized changes. Monitor pages using the 'mla_gallery' shortcode for unexpected scripts.

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