Path Traversal Vulnerability in Kestra by Kestra.io
CVE-2026-49984

7.7HIGH

Key Information:

Vendor

Kestra-io

Status
Kestra
Vendor
CVE Published:
26 June 2026

What is CVE-2026-49984?

Kestra, an open-source event-driven orchestration platform, suffers from a path traversal issue in its internal-storage backend prior to versions 1.0.45 and 1.3.23. The flaw arises from improper validation of user-supplied paths, allowing attackers to smuggle traversal sequences using Windows-style backslashes. An authenticated user can exploit this vulnerability to access and read files on the server's filesystem that should be restricted, including sensitive data from the embedded H2 database, secrets from other tenants, and critical environment configurations. This breach undermines the multi-tenancy and storage isolation mechanisms intended to protect individual user data within the Kestra platform.

Affected Version(s)

kestra < 1.0.45 < 1.0.45

kestra >= 1.1.0, < 1.3.23 < 1.1.0, 1.3.23

References

https://github.com/kestra-io/kestra/security/advisories/G...
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CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.