CVE-2026-6641

medium

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/13602c35-a0f7-4651-af9a-0be9e581893a?source=cve

https://plugins.trac.wordpress.org/changeset/3512155/

https://plugins.trac.wordpress.org/browser/media-library-assistant/trunk/includes/class-mla-shortcodes.php#L39

https://plugins.trac.wordpress.org/browser/media-library-assistant/trunk/includes/class-mla-shortcode-support.php#L2484

https://plugins.trac.wordpress.org/browser/media-library-assistant/trunk/includes/class-mla-shortcode-support.php#L2449

https://plugins.trac.wordpress.org/browser/media-library-assistant/tags/3.34/includes/class-mla-shortcodes.php#L39

https://plugins.trac.wordpress.org/browser/media-library-assistant/tags/3.34/includes/class-mla-shortcode-support.php#L2484

https://plugins.trac.wordpress.org/browser/media-library-assistant/tags/3.34/includes/class-mla-shortcode-support.php#L2449

Details

Source: Mitre, NVD

Published: 2026-09-11

Updated: 2026-09-11

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.4

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

Severity: Medium

EPSS

EPSS: 0.00217