CVE-2026-91980
MEDIUM
NVD
CVSS Score
4.3
Severity
MEDIUM
Published
Sep 15, 2026
Vendor
unknown
Description
vikunja before 2.6.0 fails to validate team access when attaching teams to projects, allowing authenticated users to enumerate all teams and members. Attackers can attach arbitrary team IDs via the project teams endpoint to retrieve complete team rosters including member names and admin flags for unauthorized teams.