Medium severity5.4NVD Advisory· Published Nov 8, 2026· Updated Nov 8, 2026
CVE-2026-123526
CVE-2026-123526
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.
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Affected products
1- Range: <2.7.1
Patches
Vulnerability mechanics
References
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