CVE-2026-38743: CWE-1220: Insufficient Granularity of Access Control in Apache Software Foundation Apache Airflow
CVE-2026-38743 is a medium-severity vulnerability in Apache Airflow where the /ui/dags endpoint fails to enforce per-DAG access control on embedded Human-in-the-Loop (HITL) and TaskInstance records. Authenticated users with read access to at least one DAG could access HITL prompts and full TaskInstance details for DAGs outside their authorized scope, exposing operator parameters and task context beyond intended boundaries. This issue widens visibility of DAG-run data beyond the intended per-DAG RBAC controls. An upgrade to Apache Airflow version 3. 2. 1 is recommended to fix this issue.
AI Analysis
Technical Summary
The vulnerability in Apache Airflow involves insufficient granularity of access control (CWE-1220) on the /ui/dags endpoint. Specifically, authenticated users with read access to any DAG can retrieve embedded HITL prompts and TaskInstance details for DAGs they are not authorized to access. These records include operator parameters and free-form context, leading to unauthorized data exposure beyond the intended role-based access control (RBAC) scope. The issue affects versions prior to 3.2.1, which contains the fix.
Potential Impact
The impact is limited to unauthorized read access of HITL prompts and TaskInstance data for DAGs outside a user's authorized scope. This results in a confidentiality breach of operator parameters and task context data but does not affect integrity or availability. The CVSS score of 4.3 reflects a medium severity with network attack vector, low attack complexity, and requiring privileges but no user interaction.
Mitigation Recommendations
Users should upgrade Apache Airflow to version 3.2.1, which addresses this access control issue. No other mitigation or temporary workaround is indicated. Patch status is not explicitly stated in the vendor advisory but the recommendation to upgrade to 3.2.1 confirms an official fix is available.
CVE-2026-38743: CWE-1220: Insufficient Granularity of Access Control in Apache Software Foundation Apache Airflow
Description
CVE-2026-38743 is a medium-severity vulnerability in Apache Airflow where the /ui/dags endpoint fails to enforce per-DAG access control on embedded Human-in-the-Loop (HITL) and TaskInstance records. Authenticated users with read access to at least one DAG could access HITL prompts and full TaskInstance details for DAGs outside their authorized scope, exposing operator parameters and task context beyond intended boundaries. This issue widens visibility of DAG-run data beyond the intended per-DAG RBAC controls. An upgrade to Apache Airflow version 3. 2. 1 is recommended to fix this issue.
CVSS v3.1
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Apache Airflow involves insufficient granularity of access control (CWE-1220) on the /ui/dags endpoint. Specifically, authenticated users with read access to any DAG can retrieve embedded HITL prompts and TaskInstance details for DAGs they are not authorized to access. These records include operator parameters and free-form context, leading to unauthorized data exposure beyond the intended role-based access control (RBAC) scope. The issue affects versions prior to 3.2.1, which contains the fix.
Potential Impact
The impact is limited to unauthorized read access of HITL prompts and TaskInstance data for DAGs outside a user's authorized scope. This results in a confidentiality breach of operator parameters and task context data but does not affect integrity or availability. The CVSS score of 4.3 reflects a medium severity with network attack vector, low attack complexity, and requiring privileges but no user interaction.
Mitigation Recommendations
Users should upgrade Apache Airflow to version 3.2.1, which addresses this access control issue. No other mitigation or temporary workaround is indicated. Patch status is not explicitly stated in the vendor advisory but the recommendation to upgrade to 3.2.1 confirms an official fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-04-06T09:51:13.806Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69eb6ac987115cfb68343e6b
Added to database: 4/24/2026, 1:06:17 PM
Last enriched: 5/1/2026, 8:46:21 PM
Last updated: 6/8/2026, 5:10:10 PM
Views: 64
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