Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L L N U H N N 6.5 .0031 23.9 —
AFFECTED Product Versions Fixed kestra < 1.0.45 – —
TIMELINE Jun 9 Reserved by GitHub_M Jun 26 EXPLOIT PUBLISHED — CVE-2026-53577 (kestra-io kestra). Public exploit reference added. Jun 26 Published (CNA: GitHub_M)
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.
| Date | Event | Detail |
|---|---|---|
| June 9, 2026 | Reserved | Reserved by GitHub_M |
| June 26, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-53577 (kestra-io kestra). Public exploit reference added. |
| June 26, 2026 | Published | Published (CNA: GitHub_M) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| kestra-io | kestra | — | < 1.0.45 | — |
Authoritative record: CVE-2026-53577 at cve.org
Vendors: kestra-io
Weaknesses: CWE-863
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-53577 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.