medium6.5
CVE-2026-53577
Kestra is an open-source, event-driven orchestration platform.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Kestra | Kestra | before 1.0.45 from 1.1.0 before 1.3.21 |