CVE-2026-40861

Katalog CVE

CVSS 6.5 · Medium EPSS 0,76%

Kerentanan Improper Link Resolution Before File Access ('Link Following') pada apache airflow. Skor CVSS 3.1 6.5 (Medium) menurut CISA ADP.

Deskripsi (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.

Rincian

Terbit di NVD

1 Juni 2026

Terakhir diubah

21 Juli 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber CISA ADP
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-59: Improper Link Resolution Before File Access ('Link Following')

EPSS (30 hari)

0,76% peluang dieksploitasi; lebih tinggi dari 54,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://lists.apache.org/thread/823334db2559xjlwt59gpzjz47thnscl mailing list · advisory vendor
• https://github.com/apache/airflow/pull/65325 issue tracking · patch
• http://www.openwall.com/lists/oss-security/2026/05/31/1 mailing list · advisory pihak ketiga