CVE-2026-48891 Details
Description
A bug in Apache Airflow's `/ui/dependencies` scheduling graph endpoint applied the caller's readable-Dag filter to the top-level serialized Dag key but still emitted referenced Dag IDs through the `dep.source` and `dep.target` fields of trigger / sensor dependency entries. An authenticated UI user with read permission on some Dags could enumerate the identifiers of other Dags they were not authorized to read by inspecting the dependency graph for trigger / sensor references. Affects deployments that rely on per-Dag read scoping to keep Dag identifiers private across teams. This is a residual gap in the fix for CVE-2026-28563, which filtered the top-level Dag key but did not propagate the filter into the trigger / sensor dep-source / dep-target fields. Users who already upgraded for CVE-2026-28563 should additionally upgrade to `apache-airflow` 3.3.0 or later to cover the residual trigger / sensor dependency leak.
A vulnerability exists in Apache Airflow versions prior to 3.3.0 within the '/ui/dependencies' scheduling graph endpoint. The issue arises because the endpoint applies the caller's readable-DAG filter only to the top-level serialized DAG key, while still emitting referenced DAG IDs through the 'dep.source' and 'dep.target' fields of trigger and sensor dependency entries. This allows an authenticated UI user with read permission on some DAGs to enumerate the identifiers of other DAGs they are not authorized to read by inspecting the dependency graph for trigger or sensor references. The vulnerability particularly affects deployments that rely on per-DAG read scoping to maintain DAG identifier privacy across teams. This issue is a residual gap from the fix for CVE-2026-28563, which had addressed the top-level DAG key filtering but failed to extend that filter to the trigger and sensor dependency fields.
Users who have upgraded for CVE-2026-28563 should additionally upgrade to Apache Airflow 3.3.0 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 7, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/apache/airflow/pull/67627 | [email protected] | Issue Tracking |
| https://lists.apache.org/thread/wzc8nflg94rq6w8f5tvtlo0o3g4wjrfl | [email protected] | Vendor Advisory |
| https://www.cve.org/CVERecord?id=CVE-2026-28563 | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| apache airflow | < 3.3.0 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 16, 2026 | CVE Modified | [email protected] |
| Jul 9, 2026 | Initial Analysis | [email protected] |
| Jul 7, 2026 | CVE Modified | CISA-ADP |
| Jul 7, 2026 | New CVE Received | [email protected] |