cvedb.io
CVE-2026-33335
HIGH · CVSS 8
EPSS exploitation probability: 0%
Published 2026-03-24T16:16:33.227 · Last modified 2026-06-17T10:37:20.373

Summary

Vikunja is an open-source self-hosted task management platform. Starting in version 0.21.0 and prior to version 2.2.0, the Vikunja Desktop Electron wrapper passes URLs from `window.open()` calls directly to `shell.openExternal()` without any validation or protocol allowlisting. An attacker who can place a link with `target="_blank"` (or that otherwise triggers `window.open`) in user-generated content can cause the victim's operating system to open arbitrary URI schemes, invoking local applications, opening local files, or triggering custom protocol handlers. Version 2.2.0 patches the issue.

Affected products

vikunja — vikunja

Does this affect you?

Add your gear to cvedb and we'll alert you only when vikunja ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.