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CVE-2026-41084

Apache Airflow: API authorization bypass: bulk TaskInstances allows cross-DAG mutation

Published: Jun 1, 2026Updated: Jun 2, 2026 Sources: CVE List NVDCWE-639
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.5%
Top 63.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A bug in Apache Airflow's bulk Task Instances API (`PATCH/DELETE /api/v2/dags/{dag_id}/dagRuns/{dag_run_id}/taskInstances`) evaluated authorization against the `dag_id` resolved from the URL path while operating on the `dag_id` / `dag_run_id` extracted from request-body entity fields. An authenticated UI/API user with edit permission on one Dag could mutate Task Instance state in any other Dag by keeping the authorized Dag's ID in the URL path and naming the target Dag's IDs in the request body entities. Affects deployments that rely on per-Dag edit-scope to keep Task Instance state isolated between teams. Users are advised to upgrade to `apache-airflow` 3.2.2 or later.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-639

Affected Products

Apache AirflowApache Software Foundation
On-premWeb App
Web & CMS Plugins
airflowapache
On-premLibrary
OSS Libraries / generic-library
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/apache/airflow/pull/64288
github.com
https://lists.apache.org/thread/w0hdcqfr71hf9rl1bwvpjs7q9yp1bldk
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/05/31/7
openwall.com

Timeline

Published
Jun 1, 2026
Last Updated
Jun 2, 2026

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