Code Injection in Apache Airflow - CVE-2026-45360
Published: June 4, 2026
Vulnerability identifier: #VU133385
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-45360
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apache Foundation
Affected software:
Apache Airflow
Apache Airflow
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code in the scheduler process.
The vulnerability exists due to improper control of dynamically managed code resources in SerializedCustomReference.deserialize_reference when deserializing DAG-author-controlled deadline references. A remote user can supply a crafted serialized class path to execute arbitrary code in the scheduler process.
The issue affects deployments where DAG-author code is less trusted than the scheduler process, and is exposed by default on single-host deployments where the DAG bundle is importable from the scheduler process.
How to mitigate CVE-2026-45360
Install security update from vendor's website.