CVE-2026-111918
CVE-2026-111918 · Vikunja 1.0.0-rc0 before 2.7.0 Cross-Tenant Task Position Writes via Saved Filter Creation
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Vikunja from 1.0.0-rc0 before 2.7.0 contains an improper authorization vulnerability in RecalculateTaskPositions that allows authenticated users with zero accessible projects to write task_positions rows for all tasks instance-wide. Attackers can delete their Inbox after repointing default_project_id, then create empty-filter saved filters to persist cross-tenant references and amplify writes for denial of service.
CVSS 5.3 · Medium · EPSS 0.2% · Fix available
- Published
- Updated
Affected products and versions
vikunja
- Versions
- ≥ 1.0.0-rc0, < 2.7.0: Affected (semver)
- 2.7.0: Not affected (semver)
Update to 2.7.0