Path Traversal in apache-airflow-providers-samba (CVE-2026-49818)
Summary
Path traversal in apache-airflow-providers-samba (CVE-2026-49818). Risk of unauthorized operations or information disclosure. Exploitable via GCSToSambaOperator. Mitigation: upgrade to 4.12.6 or later.
Original description
The description as published by the source.
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.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-49818 has been found in apache-airflow-providers-samba.
Attackers can target a specific entry point like GCSToSambaOperator over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.5/10.
What to do: upgrade apache-airflow-providers-samba to 4.12.6 or later.
If unsure, ask your IT team or search "apache-airflow-providers-samba CVE-2026-49818" on the vendor's site.
CVE-2026-49818 (apache-airflow-providers-samba) — CWE-22 / CVSS v3 6.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: GCSToSambaOperator / destination_path
Patched: 4.12.6 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Path traversal (CWE-22) exists in apache-airflow-providers-samba. Attackers reach the vulnerable code path via GCSToSambaOperator without authentication.
Check the vendor advisory for the affected versions of apache-airflow-providers-samba. Attack surface: GCSToSambaOperator / destination_path.
Severity: Medium (CVSS 6.5/10). Risk of unauthorized operations or information disclosure.
Update to 4.12.6.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'apache-airflow-providers-samba' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'apache-airflow-providers-samba' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
apache-airflow-providers-sambaを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade apache-airflow-providers-samba to 4.12.6ステージング環境で 4.12.6 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory nvd.nist.gov
- advisory lists.apache.org
- advisory github.com
- advisory github.com
- package github.com
- patch github.com
- web openwall.com
- web github.com
- web github.com
- web pypi.python.org