Apache Airflow has a Link Following issue

TRUNG BÌNH 6.5CVE-2026-40861 · BIT-airflow-2026-40861 · GHSA-89cj-xrpx-j79m · Công bố 01/06/2026 · cập nhật 21/07/2026

Tóm tắt nhanh

CVE-2026-40861 là lỗ hổng mức TRUNG BÌNH (CVSS 6.5) ảnh hưởng apache-airflow, airflow (apache).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.69%, cao hơn 52.9% các lỗ hổng khác.
Cách xử lý: cập nhật lên 3.2.2 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
apache-airflow PyPI	`< 3.2.2`	`3.2.2`
airflow apache	`< 3.2.2`	`3.2.2`

Mô tả

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.

Mô tả của NVD

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.