This affects the package plupload before 2.3.9. A file name containing JavaScript code could be uploaded and run. An attacker would need to trick a user to upload this kind of file.
{ "versions": [ { "introduced": "0" }, { "fixed": "2.3.9" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23562.json"