CVE-2026-33675: Vikunja

Medium severity, CVSS 5.4. EPSS: 0.4% chance of exploitation in the next 30 days.

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, the migration helper functions `DownloadFile` and `DownloadFileWithHeaders` in `pkg/modules/migration/helpers.go` make arbitrary HTTP GET requests without any SSRF protection. When a user triggers a Todoist or Trello migration, file attachment URLs from the third-party API response are passed directly to these functions, allowing an attacker to force the Vikunja server to fetch internal network resources and return the response as a downloadable task attachment. Version 2.2.1 patches the issue.

Affected products

• Vikunja Vikunja: before 2.2.1 (fixed in 2.2.1)

Published 2026-03-24. Last modified 2026-06-17.