Vulnerability · CVE-2026-33335
Vikunja is an open-source self-hosted task management platform.
Published Mar 24, 2026 · corrected/updated Jun 17, 2026 · vikunja vikunja · evidence confidence high
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 calls directly to without any validation or protocol allowlisting. An attacker who can place a link with (or that otherwise triggers ) 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.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-33335 is a medium public vulnerability record for vikunja vikunja. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether vikunja vikunja is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: vikunja/vikunja. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 6.4, EPSS 0.4%. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-939. Sources contributing to this record: cve_org, epss, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Mar 24, 2026 · NIST NVD
Detected
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 calls directly to without any validation or protocol allowlisting. An attacker who can place a link with (or that otherwise triggers ) in user-generated content can cause the victim's operating system to open arbitrary URI sche
Jun 17, 2026 · NIST NVD
Updated
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 calls directly to without any validation or protocol allowlisting. An attacker who can place a link with (or that otherwise triggers ) in user-generated content can cause the victim's operating system to open arbitrary URI sche
Affected
- cpe vikunja/vikunjaversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-33335
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-33335
30-day exploitation probability 0.4%
first.org - NIST NVDVulnerability recordCVE-2026-33335
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 calls directly to without any validation or protocol allowlisting. A
nvd.nist.gov