{"cve":"CVE-2026-49818","nvd":{"published":"2026-06-09T09:16:30.443","modified":"2026-07-23T08:10:00.137","status":"Analyzed","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`.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-22"],"references":["https://github.com/apache/airflow/pull/67857","https://lists.apache.org/thread/3vs0m3p51psgf54tts18d6336g24x3sf","http://www.openwall.com/lists/oss-security/2026/06/09/8"],"products":["apache:apache-airflow-providers-samba"],"source":"nvd","synced_at":"2026-10-19T22:38:48.522727527+00:00"},"epss":{"cve":"CVE-2026-49818","score":0.00624,"percentile":0.49949,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-f6vj-48fm-hmvx","url":"https://osv.dev/vulnerability/GHSA-f6vj-48fm-hmvx","summary":"Apache Airflow has a Path Traversal issue","modified":"2026-07-31T16:56:20.721678789Z","packages":[{"ecosystem":"PyPI","name":"apache-airflow-providers-samba","purl":"pkg:pypi/apache-airflow-providers-samba","ranges":["<4.12.6"],"fixed":["4.12.6"]}]},{"id":"PYSEC-2026-208","url":"https://osv.dev/vulnerability/PYSEC-2026-208","summary":"","modified":"2026-08-04T13:45:07.396094980Z","packages":[{"ecosystem":"PyPI","name":"apache-airflow-providers-samba","purl":"pkg:pypi/apache-airflow-providers-samba","ranges":["<4.12.6"],"fixed":["4.12.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}