CVE-2026-123494 · Package
NO FIX YET · SEE WHAT TO DO
Vikunja's Todoist, Microsoft To Do and Trello migration OAuth callbacks do not bind a state parameter, so a logged-in user can be tricked into visiting a callback that imports attacker-chosen projects and tasks. The imported tasks can carry phishing links.
first public Oct 22, 2026 · 1 source
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Self-hosted or hosted Vikunja instances before 2.7.1 where users can reach the Todoist, Microsoft To Do or Trello migration callbacks. The attack needs a logged-in victim to open a crafted link; the sources do not say whether the migration feature can be disabled.
Not affected if migration-unused, version-2.7.1-or-later
Who cares self-hosted, todo-apps, vikunja
2.7.1 are affected.2.7.1 or later.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.
This page as .md · .json · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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