{"id":"CVE-2026-53577","state":"PUBLISHED","title":"Kestra: Cross-Execution File Read via Preview Endpoint (IDOR)","description":"Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the previewFileFromExecution endpoint (GET /api/v1/{tenant}/executions/{executionId}/file/preview) contains an access control bypass that allows any authenticated user to read output files from any other execution within the same tenant, bypassing execution-level and namespace-level isolation. This vulnerability is fixed in 1.0.45 and 1.3.21.","publishedAt":"2026-06-26T20:52:04.006Z","updatedAt":"2026-06-27T03:15:44.579Z","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":["kestra-io kestra"],"affected":[{"vendor":"kestra-io","product":"kestra","versions":[{"version":"< 1.0.45","status":"affected"},{"version":">= 1.1.0, < 1.3.21","status":"affected"}]}],"references":["https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53577.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53577","state":"PUBLISHED","datePublished":"2026-06-26T20:52:04.006Z","dateUpdated":"2026-06-27T03:15:44.579Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-09T19:11:53.484Z"},"containers":{"cna":{"title":"Kestra: Cross-Execution File Read via Preview Endpoint (IDOR)","descriptions":[{"lang":"en","value":"Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the previewFileFromExecution endpoint (GET /api/v1/{tenant}/executions/{executionId}/file/preview) contains an access control bypass that allows any authenticated user to read output files from any other execution within the same tenant, bypassing execution-level and namespace-level isolation. This vulnerability is fixed in 1.0.45 and 1.3.21."}],"affected":[{"vendor":"kestra-io","product":"kestra","versions":[{"version":"< 1.0.45","status":"affected"},{"version":">= 1.1.0, < 1.3.21","status":"affected"}]}],"references":[{"url":"https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42","name":"https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42","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-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-26T20:53:29.778Z"},"source":{"advisory":"GHSA-r6v3-xxwj-9h42","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-27T03:15:19.214267Z","id":"CVE-2026-53577","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":"2026-06-27T03:15:44.579Z"}}]}}}