CVE-2026-41084 | A bug in Apache Airflow's bulk Task Instances API (`PATCH/DE… | CVSS 7.5 HIGH

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.

Metadata

CVE ID: CVE-2026-41084
State: PUBLISHED
Assigner: apache
Reserved: 2026-04-16 18:11 UTC
Published: 2026-06-01 07:51 UTC
Last updated: 2026-06-02 16:43 UTC
Primary CWE: CWE-639
CWE-639: Authorization Bypass Through User-Controlled Key
Vendor / Product: Apache Software Foundation / Apache Airflow
Sources: cve.org · NVD

Severity & Metrics

7.5 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
Apache Software Foundation	Apache Airflow	—	3.2.0 < 3.2.2

Weakness (CWE)

CWE	Source	Description
CWE-639	cna	CWE-639: Authorization Bypass Through User-Controlled Key

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.5	HIGH	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References (2)