Apache Airflow Backfill API parser discrepancy permits cross-DAG authorization bypass

CAO 7.5CVE-2026-68968 · BIT-airflow-2026-68968 · GHSA-j4jc-cq9h-xrhr · Công bố 12/08/2026 · cập nhật 24/10/2026

Tóm tắt nhanh

CVE-2026-68968 là lỗ hổng mức CAO (CVSS 7.5) ảnh hưởng apache-airflow, airflow (apache).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.42%, cao hơn 36.0% các lỗ hổng khác.
Cách xử lý: cập nhật lên 3.3.1 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
apache-airflow PyPI	`< 3.3.1`	`3.3.1`
airflow apache	`< 3.3.1`	`3.3.1`

Mô tả

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.

Mô tả của NVD

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.