CVE-2026-53577 – Kestra: Cross-Execution File Read via Preview Endpoint (IDOR)

CVE ID :CVE-2026-53577

Published : June 26, 2026, 8:52 p.m. | 53 minutes ago

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.

Severity: 0.0 | NA

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