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.
Metrics
Affected Vendors & Products
References
History
Fri, 27 Mar 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Vikunja
Vikunja vikunja |
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| CPEs | cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Vikunja
Vikunja vikunja |
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| Metrics |
cvssV3_1
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Wed, 25 Mar 2026 14:15:00 +0000
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| Metrics |
ssvc
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Wed, 25 Mar 2026 12:00:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Go-vikunja
Go-vikunja vikunja |
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| Vendors & Products |
Go-vikunja
Go-vikunja vikunja |
Tue, 24 Mar 2026 15:45:00 +0000
| Type | Values Removed | Values Added |
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| Description | 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. | |
| Title | Vikunja Desktop allows arbitrary local application invocation via unvalidated shell.openExternal | |
| Weaknesses | CWE-939 | |
| References |
| |
| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-03-24T15:07:41.460Z
Updated: 2026-03-25T13:41:50.096Z
Reserved: 2026-03-18T22:15:11.812Z
Link: CVE-2026-33335
Updated: 2026-03-25T13:41:40.308Z
Status : Analyzed
Published: 2026-03-24T16:16:33.227
Modified: 2026-03-27T16:58:07.513
Link: CVE-2026-33335
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