---
id: CVE-2026-123494
title: Vikunja before 2.7.1 Login CSRF via Migration OAuth Callbacks
summary: >-
  Vikunja before 2.7.1 contains a cross-site request forgery vulnerability that
  allows attackers to import their data into a victim's account because the
  Todoist, Microsoft To Do, and Trello migration OAuth callbacks lack a bound
  state par…
severity: low
cvss: 3.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-352
vendor: go-vikunja
product: vikunja
affected:
  - vikunja < 2.7.1
published: '2026-11-08'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T01:37:12.872Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123494'
references:
  - url: >-
      https://github.com/go-vikunja/vikunja/security/advisories/GHSA-xgw3-ccqg-f6ww
    label: GitHub Security Advisory (GHSA-xgw3-ccqg-f6ww)
  - url: >-
      https://www.vulncheck.com/advisories/vikunja-before-2.7.1-login-csrf-via-migration-oauth-callbacks
    label: >-
      VulnCheck Advisory: Vikunja before 2.7.1 Login CSRF via Migration OAuth
      Callbacks
tags:
  - cve.org
ingestedAt: '2026-11-08T02:43:18.708Z'
---

## Overview

Vikunja before 2.7.1 contains a cross-site request forgery vulnerability that allows attackers to import their data into a victim's account because the Todoist, Microsoft To Do, and Trello migration OAuth callbacks lack a bound state parameter. Attackers can authorize their own account, keep the unused callback code or token, and lure a logged-in victim to the migration callback route to auto-import attacker-chosen projects and tasks containing phishing links.

## Affected

- `vikunja < 2.7.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.