{"action":"Upgrade code.vikunja.io/api to 2.4.0 or later.","affected":[{"fixed":"2.4.0","introduced":"0"}],"component":"code.vikunja.io/api","cve_ids":["CVE-2026-55066"],"ecosystem":"Go","epss":0.00369,"exploited":false,"fixed_versions":["2.4.0"],"ghsa_id":"GHSA-5pg6-m483-7vrg","id":"tcs_01M5KEYMAKF3XP3N30ZK4ESS97","modified_at":"2026-09-02T19:41:30.652606332Z","published_at":"2026-08-28T16:52:16Z","references":["https://osv.dev/vulnerability/GHSA-5pg6-m483-7vrg","https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5pg6-m483-7vrg","https://github.com/go-vikunja/vikunja/pull/3239","https://github.com/go-vikunja/vikunja/commit/36cdc2ce2be0b8ccc74227d178b92047d59cd65f","https://github.com/go-vikunja/vikunja","https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"GHSA-5pg6-m483-7vrg","url":"https://osv.dev/vulnerability/GHSA-5pg6-m483-7vrg"}],"summary":"Vikunja has cross-tenant IDOR in kanban move-task endpoint via unauthorized body task_id"}