CVE-2026-40861

描述

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.

如何修補 CVE-2026-40861

要修補 CVE-2026-40861,請將受影響套件升級到下列已修補版本。

• —升級至 3.2.2 或更新版本

CVE-2026-40861 正在被利用嗎?

低 — EPSS 為 0.7%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 3.2.2

CVSS 分數

參考連結(4)

• ADVISORYwww.openwall.com/lists/oss-security/2026/05/31/1
• ADVISORYgithub.com/advisories/GHSA-89cj-xrpx-j79m
• ADVISORYlists.apache.org/thread/823334db2559xjlwt59gpzjz47thnscl
• PATCHgithub.com/apache/airflow/pull/65325