CVE-2026-48129
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk22th percentile — higher than 22% of all known CVEs
Summary
Kestra is an event-driven orchestration platform that, prior to versions 1.3.19, 1.2.19, 1.1.19, and 1.0.43, had an issue with the `inputFiles` task. This allowed file names to be written directly in the task working directory, potentially leading to overwriting files outside of that directory.
Risk Assessment
Exploitation of this vulnerability could lead to unauthorized access to the filesystem, posing a risk of data loss or introduction of malicious software.
Recommendation
It is recommended to upgrade to versions 1.3.19, 1.2.19, 1.1.19, or 1.0.43 to patch this vulnerability and secure the system.
Original NVD description (English source)
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.