{"affected":[{"defaultStatus":"unaffected","ecosystem":"pypi","packageName":"apache-airflow-core","product":"Apache Airflow","source":"CNA: apache","vendor":"Apache Software Foundation","versions":[{"lessThan":"3.2.0","status":"affected","version":"3.1.8","versionType":"semver"}]}],"cveId":"CVE-2026-33858","cwes":["CWE-502"],"description":"Dag Authors, who normally should not be able to execute code in the webserver context could craft XCom payload causing the webserver to execute arbitrary code. Since Dag Authors are already highly trusted, severity of this issue is Low.\n\n\nUsers are recommended to upgrade to Apache Airflow 3.2.0, which resolves this issue.","epss":{"date":"2026-11-02","percentile":0.48317,"score":0.00592},"exploits":[],"kev":null,"metrics":[{"score":8.8,"severity":"high","source":"ADP: CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793688871540,"publishedAt":1776090990956,"references":[{"source":"CNA: apache","tags":["patch"],"url":"https://github.com/apache/airflow/pull/64148"},{"source":"CNA: apache","tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0"},{"source":"ADP: CVE","tags":[],"url":"http://www.openwall.com/lists/oss-security/2026/04/13/7"}],"remediation":[{"kind":"fix","source":"CNA: apache","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/apache/airflow/pull/64148"}],"revision":"e73b4c8fb63b8eaaf7954b16e79d8c8478c6504d2dc5bbabbf81399127c39206","sources":[{"modifiedAt":1793688871540,"name":"CNA: apache","retrievedAt":1793689740115,"url":"https://www.cve.org/CVERecord?id=CVE-2026-33858"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793689759209,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-33858"}],"ssvc":{"assessedAt":1776038400000,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Apache Airflow: Unsafe Deserialization via Legacy Serialization Keys (__type/__var) Bypass in XCom API","updatedAt":1793689759209}