{"id":"CVE-2026-68582","title":"Vikunja versions >= 0.24.0 and <= 2.3.0 contain a broken object level authorization (BOLA) vulnerability in the task-collection endpoint (GET /api/v1/projects/{project}/views/{view}/tasks)","summary":"Vikunja versions >= 0.24.0 and <= 2.3.0 contain a broken object level authorization (BOLA) vulnerability in the task-collection endpoint (GET /api/v1/projects/{project}/views/{view}/tasks). The endpoint loads the requested project view f…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-639","CWE-863"],"published":"2026-08-02","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:34:34.997","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-68582","references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj9j-8772-4h6c","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/vikunja-broken-object-level-authorization-via-link-share-token","label":"disclosure@vulncheck.com"},{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj9j-8772-4h6c","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68582"},{"url":"https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0"},{"url":"https://github.com/advisories/GHSA-rj9j-8772-4h6c"},{"url":"https://github.com/go-vikunja/vikunja"}],"tags":["nvd","ghsa","go","osv","exploit-available"],"epss":0.0033,"epssPercentile":0.26017,"ingestedAt":"2026-08-02T13:18:30.149Z","aliases":["GHSA-rj9j-8772-4h6c","GO-2026-6749"],"ecosystem":"go","vendor":"api","product":"code.vikunja.io/api","affected":["code.vikunja.io/api >= 0.24.0, <= 2.3.0"],"patched":["code.vikunja.io/api 2.4.0"],"exploits":{"github":1,"githubRepos":["https://github.com/comradezephyr/CVE-2026-68582-PoC"],"checkedAt":"2026-10-27T19:08:40.549Z"},"exploitAvailable":true,"slug":"CVE-2026-68582","body":"## Overview\n\nVikunja versions >= 0.24.0 and <= 2.3.0 contain a broken object level authorization (BOLA) vulnerability in the task-collection endpoint (GET /api/v1/projects/{project}/views/{view}/tasks). The endpoint loads the requested project view from the URL path without verifying the caller is authorized for it. For a link-share token holder, the task scope is pinned to the share's own project, but the view is taken from the attacker-controlled path and never re-validated. As a result, a holder of any project share link can read any other tenant's kanban bucket records — bucket titles and the full created_by user object (username, name, id) — for every view in the instance. The same missing pre-authorization view load also creates a project/view-ID existence oracle (404 vs. non-404) usable by link shares and ordinary authenticated users. Task contents remain constrained to the share's own project and are not disclosed. Fixed in 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-2026-68582)\n\nAffected packages:\n\n- `code.vikunja.io/api >= 0.24.0, <= 2.3.0`\n\nPatched in:\n\n- `code.vikunja.io/api 2.4.0`\n\nSource: https://github.com/advisories/GHSA-rj9j-8772-4h6c","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":223924,"id":"CVE-2026-68582","ts":1792275993748,"field":"exploit_available","old":"false","new":"true"}]}