CVE-2026-40690: CWE-1220: Insufficient Granularity of Access Control in Apache Software Foundation Apache Airflow
CVE-2026-40690 is a medium severity vulnerability in Apache Airflow where the asset dependency graph does not properly restrict visibility based on a user's DAG read permissions. This allows a user with read access to at least one DAG to view the existence and names of other DAGs and assets outside their authorized scope. The issue does not allow modification or denial of service, only limited information disclosure. Users are recommended to upgrade to Apache Airflow version 3. 2. 1, which addresses this issue.
AI Analysis
Technical Summary
This vulnerability in Apache Airflow arises from insufficient granularity of access control (CWE-1220) in the asset dependency graph feature. Specifically, the graph did not enforce DAG read permissions correctly, enabling users with read access to any single DAG to enumerate other DAGs and assets they should not see. The CVSS 3.1 base score is 4.3 (medium), reflecting a network attack vector with low complexity and low impact limited to confidentiality. No known exploits are reported in the wild. The vendor recommends upgrading to version 3.2.1 to fix the issue.
Potential Impact
An attacker or unauthorized user with read access to at least one DAG can gain knowledge of the existence and names of other DAGs and assets beyond their permission scope. This constitutes an information disclosure vulnerability impacting confidentiality but does not affect integrity or availability.
Mitigation Recommendations
Users should upgrade to Apache Airflow version 3.2.1, which fixes this access control issue. No other official remediation or temporary workaround is documented. Patch status is not explicitly confirmed in the advisory, but the vendor recommendation to upgrade indicates an official fix is available in version 3.2.1.
CVE-2026-40690: CWE-1220: Insufficient Granularity of Access Control in Apache Software Foundation Apache Airflow
Description
CVE-2026-40690 is a medium severity vulnerability in Apache Airflow where the asset dependency graph does not properly restrict visibility based on a user's DAG read permissions. This allows a user with read access to at least one DAG to view the existence and names of other DAGs and assets outside their authorized scope. The issue does not allow modification or denial of service, only limited information disclosure. Users are recommended to upgrade to Apache Airflow version 3. 2. 1, which addresses this issue.
CVSS v3.1
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Apache Airflow arises from insufficient granularity of access control (CWE-1220) in the asset dependency graph feature. Specifically, the graph did not enforce DAG read permissions correctly, enabling users with read access to any single DAG to enumerate other DAGs and assets they should not see. The CVSS 3.1 base score is 4.3 (medium), reflecting a network attack vector with low complexity and low impact limited to confidentiality. No known exploits are reported in the wild. The vendor recommends upgrading to version 3.2.1 to fix the issue.
Potential Impact
An attacker or unauthorized user with read access to at least one DAG can gain knowledge of the existence and names of other DAGs and assets beyond their permission scope. This constitutes an information disclosure vulnerability impacting confidentiality but does not affect integrity or availability.
Mitigation Recommendations
Users should upgrade to Apache Airflow version 3.2.1, which fixes this access control issue. No other official remediation or temporary workaround is documented. Patch status is not explicitly confirmed in the advisory, but the vendor recommendation to upgrade indicates an official fix is available in version 3.2.1.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-04-15T01:09:30.824Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69eb6ac987115cfb68343e6f
Added to database: 4/24/2026, 1:06:17 PM
Last enriched: 5/1/2026, 8:46:26 PM
Last updated: 6/8/2026, 5:04:38 PM
Views: 87
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