CVE-2026-68968

Apache Airflow's Backfill API authorized a request against a Dag id supplied by the caller whenever the `backfill_id` path segment failed to parse. The authorization dependency parsed it with `int()` while the route handler parsed it as pydantic's `NonNegativeInt`, which accepts values `int()` rejects (`1.0` coerces to `1`); FastAPI resolves dependencies before endpoint validation, so the two acted on different Dags. An authenticated user holding edit permission on any single Dag could therefore read, pause and cancel backfills belonging to any other Dag, including moving another Dag's queued runs to `failed`. No non-default configuration is required and backfill ids are sequential, so finding a target is trivial. Users are advised to upgrade to apache-airflow 3.3.1 or later, which parses the backfill id with the same type the routes declare.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/apache/airflow/pull/70889	Issue Tracking Patch
https://lists.apache.org/thread/f9zmw6xs5b4syhwzbl6fsxm4kf2632ol	Mailing List
http://www.openwall.com/lists/oss-security/2026/08/12/12	Mailing List

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*

History

16 Sep 2026, 15:17

Type	Values Removed	Values Added
References	~~() https://github.com/apache/airflow/pull/70889 - Patch, Issue Tracking~~	() https://github.com/apache/airflow/pull/70889 - Issue Tracking, Patch

Information

Published : 2026-08-12 16:17

Updated : 2026-09-16 15:17

NVD link : CVE-2026-68968

Mitre link : CVE-2026-68968

CVE.ORG link : CVE-2026-68968

JSON object : View

Products Affected

apache

airflow

CWE

CWE-436

Interpretation Conflict

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