CVE-2026-53577 — Kestra: Cross-Execution File Read via Preview Endpoint (IDOR)
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}/f…
Published: 2026-06-26 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7