The Slider and Carousel slider by Depicter WordPress plugin versions up to 3.2.1 contain a stored cross-site scripting vulnerability (CWE-79) in the 'addExtraMimeType' function. This flaw allows authenticated attackers with author-level permissions or greater to inject malicious scripts into pages. These scripts execute in the context of users who visit the compromised pages, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4, reflecting network attack vector, low attack complexity, required privileges of low (author), no user interaction, and impacts on confidentiality and integrity but not availability. There is no cloud service aspect, no known exploits in the wild, and no patch links or vendor advisories currently available.

Successful exploitation allows authenticated users with author-level permissions or higher to inject and execute arbitrary JavaScript in the context of other users viewing the affected pages. This can lead to partial confidentiality and integrity impacts such as theft of sensitive information or manipulation of page content. Availability is not affected. The vulnerability requires authenticated access, limiting the attack surface to users with certain privileges.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict author-level permissions to trusted users only and consider disabling or removing the affected plugin if possible. Monitor for updates from the vendor and apply patches promptly once released.