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.

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Mon, 21 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
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.
Title Apache Airflow: Assets events API returns asset events for every Dag with no per-Dag authorization filter
Weaknesses CWE-200
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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-09-21T15:26:48.122Z

Reserved: 2026-08-17T18:58:38.671Z

Link: CVE-2026-75158

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-21T15:17:31.360

Modified: 2026-09-21T15:17:31.360

Link: CVE-2026-75158

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses