CVE-2026-48129
Kestra task inputFiles accepts traversal filenames for worker file writes
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
Kestra is an open-source, event-driven orchestration platform. Prior to versions 1.3.19, 1.2.19, 1.1.19, and 1.0.43, Kestra task `inputFiles` writes rendered file names directly under the task working directory. When a flow forwards untrusted execution or webhook data into an `inputFiles` file name, a caller can use `../` path segments to create or overwrite files outside that task working directory on the worker filesystem. Versions 1.3.19, 1.2.19, 1.1.19, and 1.0.43 patch the issue.
| CWE | CWE-22 |
| Vendor | kestra-io |
| Product | kestra |
| Published | Jun 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
Affected Versions
kestra-io / kestra
< 1.0.43 >= 1.1.0, < 1.1.19 >= 1.2.0, < 1.2.19 >= 1.3.0, < 1.3.19