CVE-2026-68968

Description

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.

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Produits concernés

• Apache Software Foundation Apache Airflow
• Apache airflow

Scores CVSS

Faiblesses (CWE)

• CWE-436

Références

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

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories