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

No history.

Information

Published : 2026-06-26 22:16

Updated : 2026-07-01 12:38

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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