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CVE-2026-50203

Apache Apache-airflow-providers-sftp path traversal

9.1 CRITICALEPSS 0.88%
  1. Published17 Jun 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Apache Apache-airflow-providers-sftp< 5.8.1

Remediation

Fixed in
Apache Apache-airflow-providers-sftp≥ 5.8.1

References

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Frequently asked

Is CVE-2026-50203 being actively exploited?

CVE-2026-50203 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.88%.

How severe is CVE-2026-50203?

CVE-2026-50203 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.88% probability of exploitation.

Which products are affected by CVE-2026-50203?

Affected products include Apache Apache-airflow-providers-sftp.

How do I fix CVE-2026-50203?

Upgrade affected software to a fixed version, for example Apache Apache-airflow-providers-sftp 5.8.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-50203 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.