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

6.5 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Basic Information

ID CVE-2026-53577

Source GitHub_M

Published Jun 26, 2026 at 20:52

Modified Jun 26, 2026 at 20:53

Affected Product

Vendor kestra-io

Product kestra

Version < 1.0.45

Affected Versions kestra-io kestra < 1.0.45
kestra-io kestra >= 1.1.0, < 1.3.21

CWE Classification

CWE-863

References

github.com /kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42

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