{"id":"CVE-2026-33676","state":"PUBLISHED","title":"Vikunja has Cross-Project Information Disclosure via Task Relations — Missing Authorization Check on Related Task Read","description":"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.","publishedAt":"2026-03-24T15:35:37.991Z","updatedAt":"2026-03-24T18:55:19.706Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["go-vikunja vikunja"],"affected":[{"vendor":"go-vikunja","product":"vikunja","versions":[{"version":"< 2.2.1","status":"affected"}]}],"references":["https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8cmm-j6c4-rr8v","https://github.com/go-vikunja/vikunja/pull/2449","https://github.com/go-vikunja/vikunja/commit/833f2aec006ac0f6643c41872e45dd79220b9174","https://vikunja.io/changelog/vikunja-v2.2.2-was-released"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/33xxx/CVE-2026-33676.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33676","state":"PUBLISHED","datePublished":"2026-03-24T15:35:37.991Z","dateUpdated":"2026-03-24T18:55:19.706Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-23T16:34:59.930Z"},"containers":{"cna":{"title":"Vikunja has Cross-Project Information Disclosure via Task Relations — Missing Authorization Check on Related Task Read","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"go-vikunja","product":"vikunja","versions":[{"version":"< 2.2.1","status":"affected"}]}],"references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8cmm-j6c4-rr8v","name":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8cmm-j6c4-rr8v","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/go-vikunja/vikunja/pull/2449","name":"https://github.com/go-vikunja/vikunja/pull/2449","tags":["x_refsource_MISC"]},{"url":"https://github.com/go-vikunja/vikunja/commit/833f2aec006ac0f6643c41872e45dd79220b9174","name":"https://github.com/go-vikunja/vikunja/commit/833f2aec006ac0f6643c41872e45dd79220b9174","tags":["x_refsource_MISC"]},{"url":"https://vikunja.io/changelog/vikunja-v2.2.2-was-released","name":"https://vikunja.io/changelog/vikunja-v2.2.2-was-released","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-24T15:35:37.991Z"},"source":{"advisory":"GHSA-8cmm-j6c4-rr8v","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8cmm-j6c4-rr8v","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-24T18:55:10.269836Z","id":"CVE-2026-33676","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":"2026-03-24T18:55:19.706Z"}}]}}}