High severity · published Jun 1, 2026
CVE-2026-41084
Apache Airflow: API authorization bypass: bulk TaskInstances allows cross-DAG mutation
7.5
CVSS
0.5%
EPSS
No
On KEV
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Apache Airflow · Apache Software Foundation
3.2.0 before 3.2.2 · source: vendor
AI
Airflow · Apache
3.2.0 before 3.2.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41084
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41084
Issue Tracking
https://github.com/apache/airflow/pull/64288
Mailing List
https://lists.apache.org/thread/w0hdcqfr71hf9rl1bwvpjs7q9yp1bldk
Mailing List
http://www.openwall.com/lists/oss-security/2026/05/31/7
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