PT-2026-27443 · Go Vikunja · Vikunja

Highkolaente · Published 2026-03-24 · Updated 2026-03-24 · CVE-2026-33335

NVD

CVSS v4.0

6.4

Medium

AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

Weakness Enumeration

CWE-939

Related Identifiers

CVE-2026-33335

Affected Products

Vikunja

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-33335 · Security Note
• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-6q44-85gc-cjvf · Note
• https://vikunja.io/changelog/vikunja-v2.2.0-was-released · Note