{"id":"CVE-2026-44736","state":"PUBLISHED","title":"OpenProject: Relations API Filter Bypasses Visibility Scope, Leaking Cross-Project Work Package Subjects","description":"OpenProject is open-source, web-based project management software. Prior to 17.4.0, the GET /api/v3/relations endpoint allows any authenticated user to retrieve relations — and the subject (title) of work packages they have no permission to view — by supplying an arbitrary work package ID in the involved, fromId, or toId filter. This bypasses the Relation.visible scope due to a flawed performance optimization in RelationQuery. This vulnerability is fixed in 17.4.0.","publishedAt":"2026-06-26T19:27:54.656Z","updatedAt":"2026-06-27T03:01:24.107Z","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":["opf openproject"],"affected":[{"vendor":"opf","product":"openproject","versions":[{"version":"< 17.4.0","status":"affected"}]}],"references":["https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645"],"weaknesses":["CWE-200","CWE-639","CWE-836"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44736.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44736","state":"PUBLISHED","datePublished":"2026-06-26T19:27:54.656Z","dateUpdated":"2026-06-27T03:01:24.107Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-07T18:04:17.309Z"},"containers":{"cna":{"title":"OpenProject: Relations API Filter Bypasses Visibility Scope, Leaking Cross-Project Work Package Subjects","descriptions":[{"lang":"en","value":"OpenProject is open-source, web-based project management software. Prior to 17.4.0, the GET /api/v3/relations endpoint allows any authenticated user to retrieve relations — and the subject (title) of work packages they have no permission to view — by supplying an arbitrary work package ID in the involved, fromId, or toId filter. This bypasses the Relation.visible scope due to a flawed performance optimization in RelationQuery. This vulnerability is fixed in 17.4.0."}],"affected":[{"vendor":"opf","product":"openproject","versions":[{"version":"< 17.4.0","status":"affected"}]}],"references":[{"url":"https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645","name":"https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645","tags":["x_refsource_CONFIRM"]}],"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-200","lang":"en","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-836","lang":"en","description":"CWE-836: Use of Password Hash Instead of Password for Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-26T19:27:54.656Z"},"source":{"advisory":"GHSA-p9gq-hrgh-2645","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/opf/openproject/security/advisories/GHSA-p9gq-hrgh-2645","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-27T02:59:53.577901Z","id":"CVE-2026-44736","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":"2026-06-27T03:01:24.107Z"}}]}}}