Apache Airflow: Arbitrary airflow.* class instantiation on the API server via the XCom deserialize endpoint
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-fcmm-42r9-mmmm | Apache Airflow XCom API permits unsafe deserialization through JSON string literals |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.529% probability within 30 days)
| Type | Values Removed | Values Added |
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| CPEs | cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:* |
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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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| Metrics |
cvssV3_1
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| Description | Apache Airflow's XCom `GET /api/v2/{...}/xcomEntries/{key}?deserialize=true` endpoint passed a string-literal payload through `BaseXCom.deserialize_value` without the `_check_forbidden_xcom_keys` guard, allowing an authenticated API user with XCom write-and-read access to instantiate arbitrary `airflow.*` classes on the API server (CWE-502). An authenticated user who can write an XCom value and then read it back with `deserialize=true` triggers the unsafe instantiation. Users are advised to upgrade to apache-airflow 3.3.1 or later, which rejects reserved XCom serialization keys submitted as JSON string literals. | |
| Title | Apache Airflow: Arbitrary airflow.* class instantiation on the API server via the XCom deserialize endpoint | |
| Weaknesses | CWE-502 | |
| References |
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