Cross-site scripting (XSS) vulnerability in index.php in SunHater KCFinder 3.11 and earlier allows remote attackers to inject arbitrary web script or HTML via (1) file or (2) directory (folder) name of an uploaded file.

A cross-site scripting (XSS) vulnerability in upload.php in SunHater KCFinder 3.20-test1, 3.20-test2, 3.12, and earlier allows remote attackers to inject arbitrary web script or HTML via the CKEditorFuncNum parameter.

uploader.php in the KCFinder integration project through 2018-06-01 for Drupal mishandles validation, aka SA-CONTRIB-2018-024. NOTE: This project is not covered by Drupal's security advisory policy.