Medium severity · published Sep 21, 2026
CVE-2026-75158
Apache Airflow: Assets events API returns asset events for every Dag with no per-Dag authorization filter
4.3
CVSS
0.6%
EPSS
No
On KEV
Description
Apache Airflow's `/assets/events` API returned asset events for every Dag in the deployment, with no filter restricting them to the Dags the caller is authorized to read. Any authenticated user holding asset-read access could therefore enumerate asset events — including the source Dag ID, task ID, run ID and event timestamps — for Dags they have no permission to see. Because the filter was also absent from the count query, `total_entries` and pagination disclosed the existence of hidden Dags even without inspecting individual rows. Deployments are affected whenever per-Dag access control is used to separate teams or tenants; no special configuration is required. Upgrade to apache-airflow 3.3.2 or later.
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)0.6% · higher than 50% 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 3.3.2 · source: vendor
AI
Airflow · Apache
before 3.3.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-75158
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-75158
Issue Tracking
https://github.com/apache/airflow/pull/71741
Mailing List
https://lists.apache.org/thread/rx5lg86l0qkjl2s7dtmpqxjq0xplr4fy
Mailing List
http://www.openwall.com/lists/oss-security/2026/09/21/3
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