CVE-2018-20244: Apache Airflow Arbitrary JavaScript Execution
Summary
CVE-2018-20244: In Apache Airflow before 1.10.2, a malicious admin user could edit the state of objects in the Airflow metadata database to execute arbitrary javascript on certain page views. Affects apache-airflow versions < 1.10.2. Fixed in 1.10.2. How to fix ↓
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Background
Apache Airflow is an open-source platform used for programmatically authoring, scheduling, and monitoring workflows. It allows users to define complex workflows as Directed Acyclic Graphs (DAGs) and execute them on a variety of platforms. The vulnerability identified as CVE-2018-20244 allows a malicious admin user to manipulate the state of objects in the Airflow metadata database, leading to the execution of arbitrary JavaScript on certain page views.
Vulnerability Detail
The vulnerability arises from a lack of proper input validation and sanitization in Apache Airflow. By modifying the state of objects in the metadata database, an admin user can inject malicious JavaScript code that will be executed when certain pages are viewed. This can result in various consequences, including unauthorized access to sensitive information, cross-site scripting (XSS) attacks, and potential compromise of the Airflow platform.
How To Fix
Latest published version: 3.3.2 as of 22 Oct 2026
pip install --upgrade "apache-airflow==3.3.2"Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
1.10.2
This is the first release that contains the fix.
pip install --upgrade "apache-airflow==1.10.2"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. However, as a general security practice, it is advisable to restrict admin privileges to trusted individuals and regularly monitor and audit the Airflow metadata database for any unauthorized changes.
Conclusion
The vulnerability identified as CVE-2018-20244 in Apache Airflow allows a malicious admin user to execute arbitrary JavaScript code by manipulating the state of objects in the metadata database. To mitigate this issue, it is crucial to upgrade to Apache Airflow version 1.10.2 or later. Regular monitoring and auditing of the metadata database are also recommended to detect any unauthorized changes. For further assistance and support in vulnerability remediation, please contact DevNack.com.
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FAQ
You can use the Vulert Playground at Vulert Scanner to check if your Apache Airflow installation is affected by this vulnerability. Simply provide the path to your Pipfile.lock, and Vulert will analyze it for any known vulnerabilities.
No, this vulnerability requires an admin user with access to the Airflow metadata database to exploit it. However, it is still crucial to address the issue promptly to prevent potential unauthorized access and further exploitation.
There have been no publicly reported instances of this vulnerability being exploited in the wild. However, it is always recommended to apply security patches and updates as soon as they become available to mitigate any potential risks.
No additional configuration is required after upgrading to Apache Airflow version 1.10.2 or later. The necessary fixes are included in the updated version, ensuring the mitigation of the vulnerability.
You can find more information about this vulnerability, including the technical details and the official advisory, in the Apache Airflow advisory database at https://github.com/pypa/advisory-database/blob/main/vulns/apache-airflow/PYSEC-2019-142.yaml.
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