Deserialization of Untrusted Data in Apache Airflow - CVE-2026-25917
Published: August 25, 2026
Vulnerability identifier: #VU145329
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-25917
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code in the webserver context.
The vulnerability exists due to unsafe deserialization and class instantiation in the API extra-links handling for XCom payloads when processing a crafted XCom payload. A remote user can craft a malicious XCom payload to execute arbitrary code in the webserver context.
Exploitation requires Dag Author capabilities.
Affected software
Apache Airflow
How to mitigate CVE-2026-25917
Install security update from vendor's website.
Apache Airflow - update to 3.2.0