Cockpit is pre-1.0; only the latest state of main receives security fixes.
Please do not report security vulnerabilities through public GitHub issues.
Instead, use GitHub's private vulnerability reporting: go to the Security tab and click Report a vulnerability. You should receive a response within a few days.
Please include enough detail to reproduce the issue: affected component (main process, preload bridge, renderer, or a provider parser), steps to reproduce, and impact as you understand it.
Cockpit's renderer is sandboxed and all renderer input crossing IPC is
treated as untrusted. Reports about paths that bypass assertKnownRepoRoot
or otherwise act on unvalidated renderer-supplied paths are particularly
relevant.