CVE-2026-91984Vikunja before 2.6.0 Broken Object-Level Authorization via task-position
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
go-vikunja vikunja go_vikunja:vikunja (from the name) | before 2.6.0; 2.6.0 not affected | CNA record |
References
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-w39f-h553-h2mxvendor-advisory
- https://www.vulncheck.com/advisories/vikunja-before-2.6.0-broken-object-level-authorization-via-task-positionthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.