CVE-2026-53577

mediumCVSS 6.5covered by 1 sourcefirst seen 2026-06-26

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.

⚡ Watch CVE-2026-53577

Get an email if CVE-2026-53577 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.

Exploitation outlook

Low exploitation risk0.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all EPSS-scored CVEs.

Advisory coverage (1)

mediumCVE-2026-53577: Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the…nvd · 2026-06-26

External references

NVD record for CVE-2026-53577

CVE.org record

Embed the live status

— this badge updates automatically when the KEV or exploit status changes. How to embed it →

[![CVE-2026-53577 status](https://www.csirts.com/badge/CVE-2026-53577)](https://www.csirts.com/cve/CVE-2026-53577)