CVE-2026-59242
CVE-2026-59242: 1 tracked advisory record across Apache. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Apache
1 advisory- Advisory severityMedium5.4
Medium [CVE-2026-59242] Apache Airflow: Arbitrary airflow.* class instantiation on the API server via the XCom deserialize endpoint
CVE-2026-59242Source published Source updated
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.
- Affected products in this advisory
- Apache Airflow
- Source-reported affected versions
- Apache Airflow before 3.3.1
- Source-reported fixed versions
- 3.3.1
- Mitigation guidance
- Users are advised to upgrade to apache-airflow 3.3.1 or later, which rejects reserved XCom serialization keys submitted as JSON string literals.
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