CVE-2026-42359

CVE-2026-42359 (Apache Airflow) : A bug in the XCom PATCH endpoint (PATCH /api/v2/xcomEntries/{key}) allows an authenticated UI/API user with XCom write permission on a DAG to set XCom entries under reserved keys (e.g., return_value) that bypass a prior validation on the POST path. The endpoint c...