{"id":"CVE-2026-49818","aliases":["EUVD-2026-35374","GHSA-f6vj-48fm-hmvx","PYSEC-2026-208"],"status":"published","title":"Apache Airflow Samba provider: Path traversal in GCSToSambaOperator via GCS object names","description":"The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path outside the configured `destination_path`. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within `destination_path`.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00624,"percentile":0.50398,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2026-06-09T07:42:48Z","modified":"2026-10-28T02:58:37Z","fixes":[{"ecosystem":"PyPI","package":"apache-airflow-providers-samba","fixed_in":["4.12.6"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"apache-airflow-providers-samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.6"}]}]},{"source":"osv","ecosystem":"PyPI","package":"apache-airflow-providers-samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.6"}]}],"versions":["1.0.0","1.0.0b1","1.0.0b2","1.0.0rc1","1.0.1","1.0.1rc1","2.0.0","2.0.0rc1","2.0.0rc2","3.0.0","3.0.0rc1","3.0.1","3.0.1rc1","3.0.2","3.0.2rc1","3.0.3","3.0.3rc1","3.0.4","3.0.4rc1","4.0.0","4.0.0rc1","4.0.0rc2","4.1.0","4.1.0rc1","4.10.0","4.10.0rc1","4.10.1","4.10.1rc1","4.10.2","4.10.2rc1","4.10.3","4.10.3rc1","4.11.0","4.11.0rc1","4.11.1","4.11.1rc1","4.12.0","4.12.0rc1","4.12.1","4.12.1rc1","4.12.2","4.12.2rc1","4.12.3","4.12.3rc1","4.12.4","4.12.4rc1","4.12.5","4.12.5rc1","4.12.6rc1","4.2.0","4.2.0rc1","4.2.0rc2","4.2.1","4.2.1rc1","4.2.2","4.2.2rc1","4.3.0","4.3.0rc1","4.4.0","4.4.0rc1","4.5.0","4.5.0rc1","4.6.0","4.6.0rc1","4.6.0rc2","4.7.0","4.7.0rc1","4.7.1","4.7.1rc1","4.8.0","4.8.0rc1","4.9.0","4.9.0rc1","4.9.0rc2","4.9.1","4.9.1rc1","4.9.2","4.9.2rc1"]},{"source":"osv","ecosystem":"PyPI","package":"apache-airflow-providers-samba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.6"}]}],"versions":["1.0.0","1.0.0b1","1.0.0b2","1.0.0rc1","1.0.1","1.0.1rc1","2.0.0","2.0.0rc1","2.0.0rc2","3.0.0","3.0.0rc1","3.0.1","3.0.1rc1","3.0.2","3.0.2rc1","3.0.3","3.0.3rc1","3.0.4","3.0.4rc1","4.0.0","4.0.0rc1","4.0.0rc2","4.1.0","4.1.0rc1","4.10.0","4.10.0rc1","4.10.1","4.10.1rc1","4.10.2","4.10.2rc1","4.10.3","4.10.3rc1","4.11.0","4.11.0rc1","4.11.1","4.11.1rc1","4.12.0","4.12.0rc1","4.12.1","4.12.1rc1","4.12.2","4.12.2rc1","4.12.3","4.12.3rc1","4.12.4","4.12.4rc1","4.12.5","4.12.5rc1","4.12.6rc1","4.2.0","4.2.0rc1","4.2.0rc2","4.2.1","4.2.1rc1","4.2.2","4.2.2rc1","4.3.0","4.3.0rc1","4.4.0","4.4.0rc1","4.5.0","4.5.0rc1","4.6.0","4.6.0rc1","4.6.0rc2","4.7.0","4.7.0rc1","4.7.1","4.7.1rc1","4.8.0","4.8.0rc1","4.9.0","4.9.0rc1","4.9.0rc2","4.9.1","4.9.1rc1","4.9.2","4.9.2rc1"]}],"products":[{"vendor":"apache","product":"apache-airflow-providers-samba"},{"vendor":"apache software foundation","product":"apache airflow samba provider"}],"references":[{"url":"https://github.com/apache/airflow/pull/67857","tags":["patch","Issue Tracking","Patch","fix","web"]},{"url":"https://lists.apache.org/thread/3vs0m3p51psgf54tts18d6336g24x3sf","tags":["vendor-advisory","Mailing List","Vendor Advisory","advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2026/06/09/8","tags":["Mailing List","Third Party Advisory","web","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49818","tags":["advisory"]},{"url":"https://github.com/apache/airflow/commit/bc1df029af15cb1d35d5ca0d33bf9235500137cc","tags":["web"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow-providers-samba/PYSEC-2026-208.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-f6vj-48fm-hmvx","tags":["advisory"]},{"url":"https://pypi.python.org","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49818.json","tags":["advisory"]},{"url":"https://github.com/apache/airflow","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-49818","title":"Apache Airflow Samba provider: Path traversal in GCSToSambaOperator via GCS object names","description":"The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path outside the configured `destination_path`. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within `destination_path`.","status":"published","published":"2026-06-09T07:42:48.028Z","modified":"2026-06-10T17:37:57.296Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T13:35:10.963527Z"}],"euvd":[{"id":"EUVD-2026-35374","description":"The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path outside the configured `destination_path`. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within `destination_path`.","status":"published","published":"2026-06-09T07:42:48Z","modified":"2026-06-10T17:37:57Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:20:44.937217Z"}],"ghsa":[{"id":"GHSA-f6vj-48fm-hmvx","title":"Apache Airflow has a Path Traversal issue","description":"The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path outside the configured `destination_path`. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within `destination_path`.","status":"published","published":"2026-06-09T09:32:07Z","modified":"2026-07-31T16:37:53Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:40:55.903445Z"}],"nvd":[{"id":"CVE-2026-49818","description":"The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path outside the configured `destination_path`. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within `destination_path`.","status":"published","published":"2026-06-09T09:16:30.443Z","modified":"2026-07-23T08:10:00.137Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:12:23.109705Z"}],"osv":[{"id":"CVE-2026-49818","title":"Apache Airflow Samba provider: Path traversal in GCSToSambaOperator via GCS object names","description":"The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path outside the configured `destination_path`. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within `destination_path`.","status":"published","published":"2026-06-09T07:42:48.028Z","modified":"2026-10-28T02:58:37.138539382Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:45:07.060148Z"},{"id":"GHSA-f6vj-48fm-hmvx","title":"Apache Airflow has a Path Traversal issue","description":"The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path outside the configured `destination_path`. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within `destination_path`.","status":"published","published":"2026-06-09T09:32:07Z","modified":"2026-07-31T16:56:20.721678789Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:46:46.006631Z"},{"id":"PYSEC-2026-208","description":"The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path outside the configured `destination_path`. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within `destination_path`.","status":"published","published":"2026-06-09T09:16:30.443Z","modified":"2026-08-04T13:45:07.39609498Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:55.537808Z"}]}}