{"action":"Upgrade apache-airflow to 3.2.0 or later.","affected":[{"fixed":"3.2.0","introduced":"3.1.8"}],"component":"apache-airflow","cve_ids":["CVE-2026-33858"],"ecosystem":"PyPI","epss":0.00592,"exploited":false,"fixed_versions":["3.2.0"],"ghsa_id":"GHSA-mc4f-r875-v87w","id":"tcs_01M5KFQTTSSXJB720YZNB7CZ5Y","modified_at":"2026-06-05T14:45:30.044880080Z","published_at":"2026-04-13T15:31:43Z","references":["https://osv.dev/vulnerability/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"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"GHSA-mc4f-r875-v87w","url":"https://osv.dev/vulnerability/GHSA-mc4f-r875-v87w"}],"summary":"Apache Airflow: Unsafe Deserialization via Legacy Serialization Keys (__type/__var) Bypass in XCom API"}