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Details of issue NIXPKGS-2026-1824

NIXPKGS-2026-1824
published 1 week, 5 days ago
updated 1 week, 5 days ago by @LeSuisse Activity log
  • Created suggestion
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Apache Airflow: Arbitrary File Read via Log Symlink following in FileTaskHandler

A Dag author could either (a) create a symlink under their task's log directory pointing to an arbitrary file readable by the API server process (read-path attack — e.g. `/etc/passwd` or `airflow.cfg`) or (b) supply a `task_id` containing `..` sequences accepted by the Task SDK's `KEY_REGEX` (write-path attack), and in both cases the FileTaskHandler resolves the log path outside the configured `base_log_folder`, leaking or overwriting arbitrary files. Only affects deployments where the worker log folder is shared with the API server. Users are advised to upgrade to `apache-airflow` 3.2.2 or later. As a defense-in-depth mitigation, deploy the worker and API server with separate log volumes so that worker-controlled paths cannot reach the API server's filesystem.

Affected products

apache-airflow
  • <3.2.2

Matching in nixpkgs

pkgs.apache-airflow

Platform to programmatically author, schedule and monitor workflows

Package maintainers