CVE-2026-42252Public exploitNetwork attack vector

Authenticated command injection via unquoted DAG configuration

Published Jun 1, 2026 · Updated Jun 1, 2026

Command injection in Apache Airflow 3.0.0 through 3.2.1 allows remote authenticated users to execute shell commands on workers. The documented BashOperator pattern inserts dag_run.conf values directly into a Jinja-templated bash_command without shell quoting or sanitization. Exploitation requires Dag.can_trigger permission and DAG code copied from the affected documentation pattern; successful injection runs with the worker task's privileges.

CVSS severity9.1
Critical
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Apache Airflow 3.0.0 through 3.2.1 allows remote authenticated users to execute shell commands on workers. The documented BashOperator pattern inserts dag_run.conf values directly into a Jinja-templated bash_command without shell quoting or sanitization. Exploitation requires Dag.can_trigger permission and DAG code copied from the affected documentation pattern; successful injection runs with the worker task's privileges.

The record

CVE
CVE-2026-42252
Published
Jun 1, 2026
Updated
Jun 1, 2026
Vendor
The Apache Software Foundation
Product
Apache Airflow
Classifications
CWE-1336, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 1, 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=3.0.0 <3.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Airflowversion=3.0.0 <3.2.2

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 exploitPublished

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

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Technologies

Your stack

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Your stack

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