CVE-2026-25917: Apache Airflow: API extra-links triggers XCom deserialization/class instantiation (Airflow 3.1.5)
Dag Authors, who normally should not be able to execute code in the webserver context could craft XCom payload causing the webserver to execute arbitrary code. Since Dag Authors are already highly trusted, severity of this issue is Low.
Users are recommended to upgrade to Apache Airflow 3.2.0, which fixes the issue.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-25917?
CVE-2026-25917 has been classified as a critical severity vulnerability due to its potential for arbitrary code execution.
How do I fix CVE-2026-25917?
To fix CVE-2026-25917, upgrade Apache Airflow to version 3.2.0 or later.
Who is affected by CVE-2026-25917?
CVE-2026-25917 affects Apache Airflow 3.1.5 and earlier versions, particularly impacting Dag Authors.
What kind of attack does CVE-2026-25917 enable?
CVE-2026-25917 enables attackers to craft XCom payloads that lead to arbitrary code execution on the webserver.
Is CVE-2026-25917 a local or remote vulnerability?
CVE-2026-25917 is considered a local vulnerability as it requires access by trusted Dag Authors to exploit.