PyPI/apache-airflow CVE-2026-33858: high 8.8, EPSS 1.06%

Apache Airflow: Unsafe Deserialization via Legacy Serialization Keys (__type/__var) Bypass in XCom API

Action: Upgrade apache-airflow to 3.2.0 or later.

pip install apache-airflow==3.2.0

Affected

Fixed versions

Sources

• osv: GHSA-mc4f-r875-v87w
• https://nvd.nist.gov/vuln/detail/CVE-2026-33858
• https://github.com/apache/airflow/pull/64148
• https://github.com/apache/airflow
• https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-20.yaml
• https://lists.apache.org/thread/1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0
• http://www.openwall.com/lists/oss-security/2026/04/13/7

CVE-2026-33858 · published 2026-04-13T15:31:43Z · modified 2026-06-05T14:45:30.044880080Z · JSON