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.
kestra-io kestra — Kestra: Path traversal in `LocalStorage` allows any authenticated user to read arbitrary server files via the execution file-download API (`\..\` bypasses the `..` guard)
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L L N C H N N 7.7 .0046 38.1 —
AFFECTED
Product Versions Fixed
kestra < 1.0.45 – —
TIMELINE
Jun 2 Reserved by GitHub_M
Jun 26 EXPLOIT PUBLISHED — CVE-2026-49984 (kestra-io kestra). Public exploit reference added.
Jun 26 Published (CNA: GitHub_M)
Description
Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.23, the local internal-storage backend validates user-supplied paths for .. traversal before it converts Windows-style backslashes to forward slashes. An attacker can therefore smuggle a traversal sequence past the guard using backslashes (..\..\..\); the guard sees a harmless string, and the path is only rewritten to ../../../ after validation, immediately before the file is opened. Any authenticated user who can view an execution (the lowest-privilege role) can call GET /api/v1/{tenant}/executions/{executionId}/file?path=… and read any file on the server filesystem readable by the Kestra process, outside the storage sandbox and across every tenant and namespace. This includes the embedded H2 database (all flows, all users, all stored secrets), internal storage of every other tenant/namespace, mounted secret files, and the process environment (/proc/self/environ) which contains configured database and secret-backend credentials. It is a complete breach of Kestra's storage isolation and multi-tenancy boundary. This vulnerability is fixed in 1.0.45 and 1.3.23.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| June 2, 2026 | Reserved | Reserved by GitHub_M |
| June 26, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-49984 (kestra-io kestra). Public exploit reference added. |
| June 26, 2026 | Published | Published (CNA: GitHub_M) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| kestra-io | kestra | — | < 1.0.45 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-49984 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.