CVE-2026-91984

MEDIUMCVSS 4.3

Description

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.

Timeline

Published:September 15th, 2026 4:17 PM

Last modified:September 16th, 2026 8:16 PM

CVSS Scoring

CVSS v3: 4.3 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-639

References & Reports

Advisories, patches, and third-party reports

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

Source: NIST NVD · Data may lag official sources by up to one minute