Security Advisory

CVE-2026-76216

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-19 14:02:01

Last updated 2026-08-20 16:10:29

Assigner VulnCheck

CVSS score 7.7

State PUBLISHED

Description

Vikunja through 2.4.0 contains a principal-type confusion vulnerability where LinkSharing principals with id N are treated as user principals with users.id == N at three permission checks lacking type guards. Attackers with a link-share JWT can remove victims from teams, enumerate and delete victim bot users, or read team rosters by exploiting id collisions in the autoincrement space.

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