CVE-2026-40690: CWE-1220: Insufficient Granularity of Access Control in Apache Software Foundation Apache Airflow
CVE-2026-40690 is an access control 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 is fixed in Apache Airflow version 3. 2. 1.
AI Analysis
Technical Summary
The vulnerability arises from insufficient granularity in access control within Apache Airflow's asset dependency graph feature. Specifically, the graph does not enforce DAG read permissions correctly, enabling users with limited access to enumerate other DAGs and assets they should not see. This information disclosure flaw can reveal deployment structure details to unauthorized users. The Apache Software Foundation recommends upgrading to version 3.2.1 to address this issue.
Potential Impact
An attacker or unauthorized user with read access to any DAG can gain knowledge of other DAGs and assets in the deployment that they are not authorized to access. This exposure of asset names and existence could aid in reconnaissance or further targeted attacks, but does not directly grant modification or execution privileges.
Mitigation Recommendations
Users should upgrade Apache Airflow to version 3.2.1, which contains the fix for this access control issue. No other mitigations are specified. Patch status is not explicitly stated but the vendor recommends upgrading to 3.2.1, indicating an official fix is available.
CVE-2026-40690: CWE-1220: Insufficient Granularity of Access Control in Apache Software Foundation Apache Airflow
Description
CVE-2026-40690 is an access control 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 is fixed in Apache Airflow version 3. 2. 1.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability arises from insufficient granularity in access control within Apache Airflow's asset dependency graph feature. Specifically, the graph does not enforce DAG read permissions correctly, enabling users with limited access to enumerate other DAGs and assets they should not see. This information disclosure flaw can reveal deployment structure details to unauthorized users. The Apache Software Foundation recommends upgrading to version 3.2.1 to address this issue.
Potential Impact
An attacker or unauthorized user with read access to any DAG can gain knowledge of other DAGs and assets in the deployment that they are not authorized to access. This exposure of asset names and existence could aid in reconnaissance or further targeted attacks, but does not directly grant modification or execution privileges.
Mitigation Recommendations
Users should upgrade Apache Airflow to version 3.2.1, which contains the fix for this access control issue. No other mitigations are specified. Patch status is not explicitly stated but the vendor recommends upgrading to 3.2.1, indicating an official fix is available.
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: 4/24/2026, 1:21:22 PM
Last updated: 4/24/2026, 2:52:02 PM
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.