{"schemaVersion":3,"id":"CVE-2026-40861","aliases":["GHSA-89cj-xrpx-j79m","BIT-airflow-2026-40861","PYSEC-2026-181","CGA-5r33-8jvf-22vm","CGA-7q62-8c7w-7gq6","CGA-7qrc-qvrq-35r9","CGA-rhr8-76cf-2957"],"status":"published","duplicateOf":null,"title":null,"description":"A Dag author could either (a) create a symlink under their task's log directory pointing to an arbitrary file readable by the API server process (read-path attack — e.g. `/etc/passwd` or `airflow.cfg`) or (b) supply a `task_id` containing `..` sequences accepted by the Task SDK's `KEY_REGEX` (write-path attack), and in both cases the FileTaskHandler resolves the log path outside the configured `base_log_folder`, leaking or overwriting arbitrary files. Only affects deployments where the worker log folder is shared with the API server. Users are advised to upgrade to `apache-airflow` 3.2.2 or later. 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