medium · CVSS v3 5.4 · CVSS v4 5.3

CVE-2026-123526

Vikunja before 2.7.1 contains a mass assignment vulnerability that allows any authenticated user to set the read-only ex…

Description

Vikunja before 2.7.1 contains a mass assignment vulnerability that allows any authenticated user to set the read-only external_id field through the team create and update endpoints. Attackers can tag a team they create or administer as externally managed, permanently blocking removal of every member and causing SSO members to be dropped from the team at their next login.

Scores

Severity
medium
CVSS v2
5.5
CVSS v3
5.4
CVSS v4
5.3
EPSS
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