CVE-2026-53577

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42	Exploit Mitigation Vendor Advisory
https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:kestra:kestra::::::::
	cpe:2.3:a:kestra:kestra::::::::

History

25 Oct 2026, 17:10

Type	Values Removed	Values Added
Summary		(es) Kestra es una plataforma de orquestación de código abierto y basada en eventos. Antes de las versiones 1.0.45 y 1.3.21, el endpoint previewFileFromExecution (GET /API/v1/{tenant}/executions/{executionId}/file/preview) contiene un bypass de control de acceso que permite a cualquier usuario autenticado leer archivos de salida de cualquier otra ejecución dentro del mismo tenant, eludiendo el aislamiento a nivel de ejecución y a nivel de namespace. Esta vulnerabilidad está corregida en las versiones 1.0.45 y 1.3.21.

Information

Published : 2026-06-26 22:16

Updated : 2026-10-25 17:10

NVD link : CVE-2026-53577

Mitre link : CVE-2026-53577

CVE.ORG link : CVE-2026-53577

JSON object : View

Products Affected

kestra

kestra

CWE

CWE-863

Incorrect Authorization

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