{"id":"CVE-2026-49297","aliases":["PYSEC-2026-2084"],"url":"https://o3.security/vulnerability/CVE-2026-49297","summary":"Apache Airflow Google provider allows path traversal through GCS object names","details":"Apache Airflow's Google provider operators `GCSToSFTPOperator` and `GCSTimeSpanFileTransformOperator` joined GCS object names returned by the bucket listing API directly to a destination filesystem path without normalisation or containment check. A user with write access to the source GCS bucket (typically a different trust principal than the DAG author — partner uploads, ingest-only service accounts, public-data buckets) could create an object whose name contains `..` segments and cause the DAG run to write the downloaded blob outside the configured destination (the SFTP `destination_path` for `GCSToSFTPOperator`; the worker-local temp directory for `GCSTimeSpanFileTransformOperator`), enabling overwrite of arbitrary files on the SFTP server or the worker host. Affects deployments that ingest from buckets writable by less-trusted principals. Users are advised to upgrade to `apache-airflow-providers-google` 22.2.1 or later.","published":"2026-07-06T12:31:30Z","modified":"2026-09-04T19:40:33.043155846Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"apache-airflow-providers-google","fixedVersion":"22.2.1"}],"fix":{"url":"https://github.com/apache/airflow/pull/67667","label":"apache/airflow#67667"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49297"},{"type":"WEB","url":"https://github.com/apache/airflow/pull/67667"},{"type":"WEB","url":"https://github.com/apache/airflow/commit/0385bae70553223677753047b3e779d8b86b15c4"},{"type":"PACKAGE","url":"https://github.com/apache/airflow"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow-providers-google/PYSEC-2026-2084.yaml"},{"type":"WEB","url":"https://lists.apache.org/thread/cb5nvoxsj1q7rv878cyqgtg150w0zglq?users@airflow.apache.org"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/07/04/8"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-04T19:40:33.043155846Z"}}