CVE-2026-6640 is a stored cross-site scripting vulnerability in the Media Library Assistant WordPress plugin. The flaw exists in the 'mla_link_attributes' parameter, allowing authenticated attackers with contributor or higher privileges to inject arbitrary web scripts. These scripts execute in the context of users who access the injected pages. The vulnerability affects all versions up to and including 3.35 due to improper neutralization of input during web page generation (CWE-79).

An attacker with contributor-level or higher access can inject malicious scripts that execute in the browsers of users viewing the affected pages. This can lead to information disclosure and integrity impacts within the context of the affected WordPress site. There is no indication of availability impact. The CVSS 3.1 base score is 6.4 (medium severity), reflecting network attack vector, low attack complexity, low privileges required, no user interaction, and partial confidentiality and integrity impact.

No official patch or fix is currently documented. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict contributor-level access and above to trusted users only. Consider applying additional input validation or output escaping controls if possible.