CVE-2026-88593 – kkFileView 5.0.0 through 5.0.2 allows reflected XSS via the /onlinePreview endpoint. The O

kkFileView 5.0.0 through 5.0.2 allows reflected XSS via the /onlinePreview endpoint. The OnlinePreviewController passes the user-controlled page and kkagent request parameters to FreeMarker templates without sanitization, and the templates insert these values into raw JavaScript contexts.