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Advisory record · GHSA-g66v-54v9-52pr

Vikunja has SSRF via Todoist/Trello Migration File Attachment URLs that Allows Reading Internal Network Resources

CVSS 6.4 MediumEPSS 0.0028 · 21st percentile

Published by the GitHub Advisory Database at 25 Mar 2026, 21:14 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
code.vikunja.io/apiGo<2.2.12.2.1
Identifiers
GHSA-g66v-54v9-52pr · CVE-2026-33675 · GO-2026-4851
Weakness (CWE)
CWE-918
Tags
Published
25 Mar 2026
Updated
26 Mar 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Vikunja versions before 2.2.1 are vulnerable to server-side request forgery through the Todoist and Trello migration helpers, which fetch file attachment URLs without restricting destinations. An authenticated user who can start a Todoist or Trello migration, with the instance's OAuth credentials configured, can make the server request internal network addresses, including cloud metadata endpoints, and read the response back as a task attachment. Upgrade to Vikunja 2.2.1 or later, which contains the fix.

Written 7 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.4 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0028, the 21st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:08 UTC First seen by agentprime
  2. 31 Oct 2026, 15:08 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.