{"id":"CVE-2026-55065","title":"Vikunja is an open-source self-hosted task management platform","summary":"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 a…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","cwe":["CWE-285","CWE-639"],"vendor":"api","product":"code.vikunja.io/api","affected":["code.vikunja.io/api >= 0.24.6, < 2.4.0"],"patched":["code.vikunja.io/api 2.4.0"],"published":"2026-08-28","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:09:13.080","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55065","references":[{"url":"https://github.com/go-vikunja/vikunja/commit/6895a7765ef1667be4b79df29549d33b9e1ca9ca","label":"security-advisories@github.com"},{"url":"https://github.com/go-vikunja/vikunja/pull/3239","label":"security-advisories@github.com"},{"url":"https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0","label":"security-advisories@github.com"},{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-gg93-x632-9ccv","label":"security-advisories@github.com"},{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-gg93-x632-9ccv","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-gg93-x632-9ccv"}],"tags":["nvd","ghsa","go"],"epss":0.00348,"epssPercentile":0.28336,"aliases":["GHSA-gg93-x632-9ccv"],"ecosystem":"go","ingestedAt":"2026-08-28T17:22:56.484Z","slug":"CVE-2026-55065","body":"## Overview\n\nVikunja 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-55065)\n\nAffected packages:\n\n- `code.vikunja.io/api >= 0.24.6, < 2.4.0`\n\nPatched in:\n\n- `code.vikunja.io/api 2.4.0`\n\nSource: https://github.com/advisories/GHSA-gg93-x632-9ccv","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}