What’s Vulnerable › Vulnerabilities

CVE-2026-75158: Apache Airflow: Assets events API returns asset events for every Dag with no per-Dag authorization filter

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-21 · updated 2026-09-25
• Weakness: CWE-200

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.

Affected products

• Apache Airflow: before 3.3.2 — fixed in 3.3.2

How to fix

Upgrade to a fixed version: Apache Airflow 3.3.2. Check the vendor advisory for mitigations.

References

• https://github.com/apache/airflow/pull/71741
• https://lists.apache.org/thread/rx5lg86l0qkjl2s7dtmpqxjq0xplr4fy
• http://www.openwall.com/lists/oss-security/2026/09/21/3

Get alerted when CVE-2026-75158 or the next vulnerability affects your stack