{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-96285", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-09-22T21:07:41.624Z", "datePublished": "2026-11-09T09:47:22.524Z", "dateUpdated": "2026-11-09T09:47:22.524Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-11-09T09:47:22.524Z"}, "title": "Apache Airflow: Scheduler: next_kwargs deserialized before the dict check, so resume data still invokes constructors", "problemTypes": [{"descriptions": [{"description": "CWE-502: Deserialization of Untrusted Data", "lang": "en", "cweId": "CWE-502", "type": "CWE"}]}], "source": {"discovery": "EXTERNAL"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Airflow", "packageURL": "pkg:pypi/apache-airflow-core", "versions": [{"status": "affected", "version": "3.3.0", "lessThan": "3.4.0", "versionType": "semver"}], "defaultStatus": "unaffected", "collectionURL": "https://pypi.python.org", "packageName": "apache-airflow-core"}], "descriptions": [{"value": "Apache Airflow 3.3.1 shipped a fix for CVE-2026-67260 that checks the scheduler's decoded `next_kwargs` value is a dictionary, but performs that check only after deserializing the whole stored payload. Deserialization reconstructs nested objects of classes permitted by the deserialization allow-list \u2014 which by default includes Airflow's own classes \u2014 and runs their constructors inside the scheduler process before the check can reject the value. A Dag author, who controls a task's `next_kwargs` through the task execution API, can therefore still trigger constructor execution in the scheduler when the `awaiting_input` timeout sweep processes the task, and in the API server when the task instance is served to a worker using an older Execution API version; no non-default configuration is required. Versions before 3.3.0 are not affected. This is an incomplete fix for CVE-2026-67260: deployments that upgraded to 3.3.1 for that issue must also upgrade to apache-airflow 3.4.0 or later.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Apache Airflow 3.3.1 shipped a fix for CVE-2026-67260 that checks the scheduler's decoded `next_kwargs` value is a dictionary, but performs that check only after deserializing the whole stored payload. Deserialization reconstructs nested objects of classes permitted by the deserialization allow-list \u2014 which by default includes Airflow's own classes \u2014 and runs their constructors inside the scheduler process before the check can reject the value. A Dag author, who controls a task's `next_kwargs` through the task execution API, can therefore still trigger constructor execution in the scheduler when the `awaiting_input` timeout sweep processes the task, and in the API server when the task instance is served to a worker using an older Execution API version; no non-default configuration is required. Versions before 3.3.0 are not affected. This is an incomplete fix for CVE-2026-67260: deployments that upgraded to 3.3.1 for that issue must also upgrade to apache-airflow 3.4.0 or later."}]}], "references": [{"url": "https://github.com/apache/airflow/pull/73576", "tags": ["patch"]}, {"url": "https://github.com/apache/airflow/pull/73577", "tags": ["patch"]}, {"url": "https://www.cve.org/CVERecord?id=CVE-2026-67260", "tags": ["related"]}, {"url": "https://lists.apache.org/thread.html/5grvgsjw0c47q0pko8vnfy35drj4jyck", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "moderate"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "credits": [{"lang": "en", "value": "Andrew Rukin (Arenadata)", "type": "finder"}, {"lang": "en", "value": "Jarek Potiuk", "type": "remediation developer"}], "x_generator": {"engine": "airflow-s/generate_cve_json.py"}}}}

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{"affected": [{"affectedData": [{"collectionURL": "https://pypi.python.org", "defaultStatus": "unaffected", "packageName": "apache-airflow-core", "packageURL": "pkg:pypi/apache-airflow-core", "product": "Apache Airflow", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "3.4.0", "status": "affected", "version": "3.3.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Apache Airflow 3.3.1 shipped a fix for CVE-2026-67260 that checks the scheduler's decoded `next_kwargs` value is a dictionary, but performs that check only after deserializing the whole stored payload. Deserialization reconstructs nested objects of classes permitted by the deserialization allow-list \u2014 which by default includes Airflow's own classes \u2014 and runs their constructors inside the scheduler process before the check can reject the value. A Dag author, who controls a task's `next_kwargs` through the task execution API, can therefore still trigger constructor execution in the scheduler when the `awaiting_input` timeout sweep processes the task, and in the API server when the task instance is served to a worker using an older Execution API version; no non-default configuration is required. Versions before 3.3.0 are not affected. This is an incomplete fix for CVE-2026-67260: deployments that upgraded to 3.3.1 for that issue must also upgrade to apache-airflow 3.4.0 or later."}], "id": "CVE-2026-96285", "lastModified": "2026-11-09T10:17:16.203", "metrics": {}, "published": "2026-11-09T10:17:16.203", "references": [{"source": "security@apache.org", "url": "https://github.com/apache/airflow/pull/73576"}, {"source": "security@apache.org", "url": "https://github.com/apache/airflow/pull/73577"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/5grvgsjw0c47q0pko8vnfy35drj4jyck"}, {"source": "security@apache.org", "url": "https://www.cve.org/CVERecord?id=CVE-2026-67260"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "security@apache.org", "type": "Primary"}]}

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