CVE-2026-91980

MediumCVSS 4.3/10Last modified Sep 16, 2026

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.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-200

Affected software

Vendor	Product	Versions
go-vikunja	vikunja	< 2.6.0

References

Timeline

Published: Sep 15, 2026
Last modified: Sep 16, 2026
NVD status: Deferred

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