Medium severity · published Apr 24, 2026
CVE-2026-38743
Apache Airflow: Dags endpoint might provide access to otherwise inaccessible entities
4.3
CVSS
0.4%
EPSS
No
On KEV
Description
The authenticated /ui/dags endpoint did not enforce per-DAG access control on embedded Human-in-the-Loop (HITL) and TaskInstance records: a logged-in Airflow user with read access to at least one DAG could retrieve HITL prompts (including their request parameters) and full TaskInstance details for DAGs outside their authorized scope. Because HITL prompts and TaskInstance fields routinely carry operator parameters and free-form context attached to a task, the leak widens visibility of DAG-run data beyond the intended per-DAG RBAC boundary for every authenticated user.
Users are recommended to upgrade to version 3.2.1 , which fixes this issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Apache Airflow · Apache Software Foundation
before 3.2.1 · source: vendor
AI
Airflow · Apache
before 3.2.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-38743
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-38743
Issue Tracking
https://github.com/apache/airflow/pull/64822
Mailing List
https://lists.apache.org/thread/sk2wj0x48o8qb4p7c47gvnhjbm0mg396
Mailing List
http://www.openwall.com/lists/oss-security/2026/04/24/3
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