CVE-2026-42359

Katalog CVE

CVSS 8.8 · High EPSS 0,95%

Kerentanan Deserialization of Untrusted Data pada apache airflow. Skor CVSS 3.1 8.8 (High) menurut CISA ADP.

Deskripsi (NVD)

A bug in Apache Airflow's XCom PATCH endpoint `PATCH /api/v2/xcomEntries/{key}` allowed an authenticated UI/API user with XCom write permission on a Dag to set XCom entries under reserved key names (e.g. `return_value`) that the matching POST endpoint already validated against `FORBIDDEN_XCOM_KEYS`. The endpoint also accepted serialized payload shapes the triggerer's deserializer treats as code; combined, this allowed RCE on the triggerer when the affected task next deferred. Affects deployments where untrusted users have XCom write permission on Dags that defer to the triggerer. This is a fix-bypass of CVE-2026-33858: PR #64148 added the `FORBIDDEN_XCOM_KEYS` validator only on the POST/set path; the PATCH path was not covered. Users who already upgraded for CVE-2026-33858 should additionally upgrade to `apache-airflow` 3.2.2 or later to cover the PATCH-path bypass.

Rincian

Terbit di NVD

1 Juni 2026

Terakhir diubah

21 Juli 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-502: Deserialization of Untrusted Data

EPSS (30 hari)

0,95% peluang dieksploitasi; lebih tinggi dari 60,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://lists.apache.org/thread/g8dqykpf1p90tysq8tln4qtkqwb1038s mailing list · advisory vendor
• https://github.com/apache/airflow/pull/65915 issue tracking · patch
• https://www.cve.org/CVERecord?id=CVE-2026-33858 advisory pihak ketiga