Path Traversal in apache-airflow-providers-sftp (CVE-2026-50203)
Summary
Path traversal in apache-airflow-providers-sftp (CVE-2026-50203). Confidential information can be exposed externally. Exploitable via SFTPHook.retrieve_directory. Mitigation: upgrade to 5.8.1 or later.
Original description
The description as published by the source.
A path traversal in the SFTP provider (SFTPHook.retrieve_directory / SFTPOperator(operation=get)) let a malicious or compromised remote SFTP server write files outside the configured local destination directory via crafted directory-entry names. No Airflow account is required — the attack surface is any deployment downloading directories from an untrusted SFTP server. Upgrade apache-airflow-providers-sftp to 5.8.1 or later.
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-2026-50203 has been found in apache-airflow-providers-sftp.
Attackers can target a specific entry point like SFTPHook.retrieve_directory over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 9.1/10.
What to do: upgrade apache-airflow-providers-sftp to 5.8.1 or later.
If unsure, ask your IT team or search "apache-airflow-providers-sftp CVE-2026-50203" on the vendor's site.
CVE-2026-50203 (apache-airflow-providers-sftp) — CWE-22 / CVSS v3 9.1
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: SFTPHook.retrieve_directory
Patched: 5.8.1 — 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-sftp. Attackers reach the vulnerable code path via SFTPHook.retrieve_directory without authentication.
Check the vendor advisory for the affected versions of apache-airflow-providers-sftp. Attack surface: SFTPHook.retrieve_directory.
Severity: Critical (CVSS 9.1/10). Confidential information can be exposed externally.
Update to 5.8.1.
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-sftp' . 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-sftp' . | 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-sftp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-sftp to 5.8.1ステージング環境で 5.8.1 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
- patch github.com
- web openwall.com
- web github.com
- web github.com
- web pypi.python.org