CVE-2026-111918
MEDIUM
CVSS 5.4
Published: 2026-10-17
Modified: 2026-10-17
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Description
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.
Quick Facts
| CVE ID | CVE-2026-111918 |
| CVSS Score | 5.4 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
| Published | 2026-10-17 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |