{"id":"CVE-2026-33676","aliases":["GHSA-8cmm-j6c4-rr8v","GO-2026-4847"],"url":"https://o3.security/vulnerability/CVE-2026-33676","summary":"Vikunja has Cross-Project Information Disclosure via Task Relations — Missing Authorization Check on Related Task Read","details":"Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, when the Vikunja API returns tasks, it populates the `related_tasks` field with full task objects for all related tasks without checking whether the requesting user has read permission on those tasks' projects. An authenticated user who can read a task that has cross-project relations will receive full details (title, description, due dates, priority, percent completion, project ID, etc.) of tasks in projects they have no access to. Version 2.2.1 patches the issue.","published":"2026-03-24T15:35:37.991Z","modified":"2026-08-07T11:50:54.423448097Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"code.vikunja.io/api","fixedVersion":"2.2.1"}],"fix":{"url":"https://github.com/go-vikunja/vikunja/commit/833f2aec006ac0f6643c41872e45dd79220b9174","label":"go-vikunja/vikunja@833f2ae"},"references":[{"type":"WEB","url":"https://vikunja.io/changelog/vikunja-v2.2.2-was-released"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33676.json"},{"type":"ADVISORY","url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8cmm-j6c4-rr8v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33676"},{"type":"FIX","url":"https://github.com/go-vikunja/vikunja/commit/833f2aec006ac0f6643c41872e45dd79220b9174"},{"type":"FIX","url":"https://github.com/go-vikunja/vikunja/pull/2449"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:50:54.423448097Z"}}