CVE-2026-53577
Last modified
CVE-2026-53577 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Kestra | Kestra | < 1.0.45 |
| Kestra | Kestra | >= 1.1.0, < 1.3.21 |
References
- https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42Exploit, Mitigation, Vendor Advisory
- https://github.com/kestra-io/kestra/security/advisories/GHSA-r6v3-xxwj-9h42Exploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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