{"id":"CVE-2026-55065","state":"PUBLISHED","title":"Vikunja: Improper Authorization and Authorization Bypass Through User-Controlled Key in code.vikunja.io/api","description":"Vikunja is an open-source self-hosted task management platform. From 0.24.6 until 2.4.0, DELETE /api/v1/projects/:project/views/:view permits an authenticated user to supply a view identifier from another project while authorizing only against an attacker-controlled project identifier. ProjectView.CanDelete in pkg/models/project_view_permissions.go does not establish that the view belongs to the path project, and ProjectView.Delete in pkg/models/project_view.go continues after the scoped project_views delete affects no rows. Its subsequent deletes select task_buckets and task_positions only by project_view_id, allowing cross-tenant destruction of Kanban assignments and ordering while leaving the victim view and tasks intact. This issue is fixed in version 2.4.0.","publishedAt":"2026-08-28T16:40:27.706Z","updatedAt":"2026-09-01T01:46:09.120Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["go-vikunja vikunja"],"affected":[{"vendor":"go-vikunja","product":"vikunja","versions":[{"version":">= 0.24.6, < 2.4.0","status":"affected"}]}],"references":["https://github.com/go-vikunja/vikunja/security/advisories/GHSA-gg93-x632-9ccv","https://github.com/go-vikunja/vikunja/pull/3239","https://github.com/go-vikunja/vikunja/commit/6895a7765ef1667be4b79df29549d33b9e1ca9ca","https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0"],"weaknesses":["CWE-285","CWE-639"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55065.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55065","state":"PUBLISHED","datePublished":"2026-08-28T16:40:27.706Z","dateUpdated":"2026-09-01T01:46:09.120Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-16T14:33:35.710Z"},"containers":{"cna":{"title":"Vikunja: Improper Authorization and Authorization Bypass Through User-Controlled Key in code.vikunja.io/api","descriptions":[{"lang":"en","value":"Vikunja is an open-source self-hosted task management platform. From 0.24.6 until 2.4.0, DELETE /api/v1/projects/:project/views/:view permits an authenticated user to supply a view identifier from another project while authorizing only against an attacker-controlled project identifier. ProjectView.CanDelete in pkg/models/project_view_permissions.go does not establish that the view belongs to the path project, and ProjectView.Delete in pkg/models/project_view.go continues after the scoped project_views delete affects no rows. Its subsequent deletes select task_buckets and task_positions only by project_view_id, allowing cross-tenant destruction of Kanban assignments and ordering while leaving the victim view and tasks intact. This issue is fixed in version 2.4.0."}],"affected":[{"vendor":"go-vikunja","product":"vikunja","versions":[{"version":">= 0.24.6, < 2.4.0","status":"affected"}]}],"references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-gg93-x632-9ccv","name":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-gg93-x632-9ccv","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/go-vikunja/vikunja/pull/3239","name":"https://github.com/go-vikunja/vikunja/pull/3239","tags":["x_refsource_MISC"]},{"url":"https://github.com/go-vikunja/vikunja/commit/6895a7765ef1667be4b79df29549d33b9e1ca9ca","name":"https://github.com/go-vikunja/vikunja/commit/6895a7765ef1667be4b79df29549d33b9e1ca9ca","tags":["x_refsource_MISC"]},{"url":"https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0","name":"https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-285","lang":"en","description":"CWE-285: Improper Authorization","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-28T16:40:27.706Z"},"source":{"advisory":"GHSA-gg93-x632-9ccv","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-gg93-x632-9ccv","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-01T01:45:31.342431Z","id":"CVE-2026-55065","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-01T01:46:09.120Z"}}]}}}