CVE-2026-91984
5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Summary
Vikunja before 2.6.0 fails to validate that user-supplied project_view_id in task-position requests belongs to the task's project. Authenticated attackers can insert task position rows into arbitrary other tenant project views via POST or PUT task-position endpoints.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| go-vikunja | vikunja | 0 < 2.6.0 | affected |
| go-vikunja | vikunja | 2.6.0 | unaffected |
Weaknesses
- CWE-639: Authorization Bypass Through User-Controlled Key
References
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-w39f-h553-h2mx
- https://www.vulncheck.com/advisories/vikunja-before-2.6.0-broken-object-level-authorization-via-task-position
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