CVE-2026-38743Network attack vector

Cross-DAG data disclosure via missing nested permissions

Published Apr 24, 2026 · Updated Apr 24, 2026

Access-control failure in Apache Airflow before 3.2.1 allows remote authenticated users to read other DAGs' task data via /ui/dags. The endpoint authorizes DAG access without requiring RUN, HITL_DETAIL, and TASK_INSTANCE permissions for nested objects, so it returns HITL prompts, request parameters, and full TaskInstance details across DAG boundaries. A valid account with read access to at least one DAG is required, and the impact is limited to disclosure of DAG-run data available through those embedded records.

CVSS severity4.3
Medium
EPSS probability0.35%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access-control failure in Apache Airflow before 3.2.1 allows remote authenticated users to read other DAGs' task data via /ui/dags. The endpoint authorizes DAG access without requiring RUN, HITL_DETAIL, and TASK_INSTANCE permissions for nested objects, so it returns HITL prompts, request parameters, and full TaskInstance details across DAG boundaries. A valid account with read access to at least one DAG is required, and the impact is limited to disclosure of DAG-run data available through those embedded records.

The record

CVE
CVE-2026-38743
Published
Apr 24, 2026
Updated
Apr 24, 2026
Vendor
The Apache Software Foundation
Product
Apache Airflow
Classifications
CWE-1220, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Airflowversion=0 <3.2.1

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1220Insufficient Granularity of Access Control
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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