What’s Vulnerable › Vulnerabilities

CVE-2026-33675: Vikunja has SSRF via Todoist/Trello Migration File Attachment URLs that Allows Reading Internal Network Resources

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-24 · updated 2026-06-17
• Weakness: CWE-918

Description

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

• go-vikunja vikunja: before 2.2.1 — fixed in 2.2.1

How to fix

Upgrade to a fixed version: go-vikunja vikunja 2.2.1. Check the vendor advisory for mitigations.

References

• https://github.com/go-vikunja/vikunja/commit/93297742236e3d33af72c993e5da960db01d259e
• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-g66v-54v9-52pr
• https://vikunja.io/changelog/vikunja-v2.2.2-was-released
• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-g66v-54v9-52pr

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