What is CVE-2026-49818?

CVE-2026-49818 is a medium-severity path traversal vulnerability in apache-airflow-providers-samba (pip), affecting versions < 4.12.6. It is fixed in 4.12.6. Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files.

How severe is CVE-2026-49818?

CVE-2026-49818 has a CVSS score of 6.5 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which versions of apache-airflow-providers-samba are affected by CVE-2026-49818?

apache-airflow-providers-samba (pip) versions < 4.12.6 is affected.

Is there a fix for CVE-2026-49818?

Yes. CVE-2026-49818 is fixed in 4.12.6. Upgrade to this version or later.

Is CVE-2026-49818 exploitable, and should I be worried?

Whether CVE-2026-49818 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2026-49818 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

CVE-2026-49818 in apache-airflow-providers-samba

Q: How severe is CVE-2026-49818?

CVE-2026-49818 has a CVSS score of 6.5 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Q: Which versions of apache-airflow-providers-samba are affected by CVE-2026-49818?

apache-airflow-providers-samba (pip) versions < 4.12.6 is affected.

Q: Is there a fix for CVE-2026-49818?

Yes. CVE-2026-49818 is fixed in 4.12.6. Upgrade to this version or later.

Q: Is CVE-2026-49818 exploitable, and should I be worried?

Whether CVE-2026-49818 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2026-49818 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2026-49818?

Upgrade apache-airflow-providers-samba to 4.12.6 or later.

Summary

Apache Airflow has a Path Traversal issue

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.

Impact

Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files. Typical impact: unauthorized file read or write outside the intended directory.

CVE-2026-49818 has a CVSS score of 6.5 (Medium). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (4.12.6); upgrading removes the vulnerable code path.

Affected versions

apache-airflow-providers-samba (< 4.12.6)

Security releases

apache-airflow-providers-samba → 4.12.6 (pip)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade apache-airflow-providers-samba to 4.12.6 or later to resolve this vulnerability.

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is CVE-2026-49818? CVE-2026-49818 is a medium-severity path traversal vulnerability in apache-airflow-providers-samba (pip), affecting versions < 4.12.6. It is fixed in 4.12.6. Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files.
How severe is CVE-2026-49818? CVE-2026-49818 has a CVSS score of 6.5 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Which versions of apache-airflow-providers-samba are affected by CVE-2026-49818? apache-airflow-providers-samba (pip) versions < 4.12.6 is affected.
Is there a fix for CVE-2026-49818? Yes. CVE-2026-49818 is fixed in 4.12.6. Upgrade to this version or later.
Is CVE-2026-49818 exploitable, and should I be worried? Whether CVE-2026-49818 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2026-49818 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2026-49818? Upgrade apache-airflow-providers-samba to 4.12.6 or later.