Open WebUI < 0.10.0

A stored web worker XSS vulnerability, CVE-2026-59214, in Open WebUI versions prior to 0.10.0 allows a low-privileged user to inject malicious Python code into chat messages that, when executed by an administrator or privileged user via a 'Run' click, triggers authenticated same-origin requests to create server-side functions with arbitrary commands, leading to remote code execution on the Open WebUI server.