Apache Airflow: Authorization bypass in the Backfill API through conflicting interpretations of the backfill id
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Apache Software Foundation | Apache Airflow | unaffected |
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| Apache Software Foundation | Apache Airflow | unaffected |
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| Apache | Airflow |
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| Source | ID | Title |
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Github GHSA |
GHSA-j4jc-cq9h-xrhr | Apache Airflow Backfill API parser discrepancy permits cross-DAG authorization bypass |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.417% probability within 30 days)
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| CPEs | cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:* |
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| Metrics |
cvssV3_1
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| First Time appeared |
Apache
Apache airflow |
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| Vendors & Products |
Apache
Apache airflow |
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| References |
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| 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. | |
| Title | Apache Airflow: Authorization bypass in the Backfill API through conflicting interpretations of the backfill id | |
| Weaknesses | CWE-436 | |
| References |
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