{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-67587", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-07-29T19:47:18.427Z", "datePublished": "2026-08-12T15:32:10.565Z", "dateUpdated": "2026-08-12T16:25:04.749Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://pypi.python.org", "defaultStatus": "unaffected", "packageName": "apache-airflow", "product": "Apache Airflow", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "3.3.1", "status": "affected", "version": "3.3.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Nguyen Van Hiep (@hypnguyen1209), MBBank"}, {"lang": "en", "type": "remediation developer", "value": "Jarek Potiuk"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Apache Airflow's Task SDK rebuilt a `Callback` object from serialized data by re-running its constructor, which imports the module named by the stored callback path. Because `SyncCallback` is itself an Airflow class it passes the default `allowed_deserialization_classes` allow-list, so tightening that setting does not help. A Dag author \u2014 who controls a task instance's `next_kwargs` through the task execution API \u2014 can therefore cause an arbitrary module to be imported inside the scheduler process, when the scheduler's `awaiting_input` timeout sweep deserializes that value. No non-default configuration is required; the sweep runs unconditionally. Versions before 3.3.0 are not affected: the class existed, but the scheduler sweep that reaches it did not. This is a separate code path from CVE-2026-58076 and CVE-2026-67260, which cover different gadgets reaching deserialization \u2014 applying either of those fixes does not address this one. Users are advised to upgrade to apache-airflow 3.3.1 or later."}], "value": "Apache Airflow's Task SDK rebuilt a `Callback` object from serialized data by re-running its constructor, which imports the module named by the stored callback path. Because `SyncCallback` is itself an Airflow class it passes the default `allowed_deserialization_classes` allow-list, so tightening that setting does not help. A Dag author \u2014 who controls a task instance's `next_kwargs` through the task execution API \u2014 can therefore cause an arbitrary module to be imported inside the scheduler process, when the scheduler's `awaiting_input` timeout sweep deserializes that value. No non-default configuration is required; the sweep runs unconditionally. Versions before 3.3.0 are not affected: the class existed, but the scheduler sweep that reaches it did not. This is a separate code path from CVE-2026-58076 and CVE-2026-67260, which cover different gadgets reaching deserialization \u2014 applying either of those fixes does not address this one. Users are advised to upgrade to apache-airflow 3.3.1 or later."}], "metrics": [{"other": {"content": {"text": "important"}, "type": "Textual description of severity"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-502", "description": "CWE-502: Deserialization of Untrusted Data", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-08-12T16:25:04.749Z"}, "references": [{"tags": ["patch"], "url": "https://github.com/apache/airflow/pull/70704"}, {"tags": ["related"], "url": "https://www.cve.org/CVERecord?id=CVE-2026-58076"}, {"tags": ["related"], "url": "https://www.cve.org/CVERecord?id=CVE-2026-67260"}, {"tags": ["vendor-advisory"], "url": "https://lists.apache.org/thread/o00ww4n69qojvsckb464dtwd2nhzy6t0"}], "source": {"discovery": "UNKNOWN"}, "title": "Apache Airflow: DAG-author remote code execution on the Scheduler via a Serde `Callback` deserialization gadget", "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", "product": "Apache Airflow", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "3.3.1", "status": "affected", "version": "3.3.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Apache Airflow's Task SDK rebuilt a `Callback` object from serialized data by re-running its constructor, which imports the module named by the stored callback path. Because `SyncCallback` is itself an Airflow class it passes the default `allowed_deserialization_classes` allow-list, so tightening that setting does not help. A Dag author \u2014 who controls a task instance's `next_kwargs` through the task execution API \u2014 can therefore cause an arbitrary module to be imported inside the scheduler process, when the scheduler's `awaiting_input` timeout sweep deserializes that value. No non-default configuration is required; the sweep runs unconditionally. Versions before 3.3.0 are not affected: the class existed, but the scheduler sweep that reaches it did not. This is a separate code path from CVE-2026-58076 and CVE-2026-67260, which cover different gadgets reaching deserialization \u2014 applying either of those fixes does not address this one. Users are advised to upgrade to apache-airflow 3.3.1 or later."}], "id": "CVE-2026-67587", "lastModified": "2026-08-12T16:17:15.090", "metrics": {}, "published": "2026-08-12T16:17:15.090", "references": [{"source": "security@apache.org", "url": "https://github.com/apache/airflow/pull/70704"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread/o00ww4n69qojvsckb464dtwd2nhzy6t0"}, {"source": "security@apache.org", "url": "https://www.cve.org/CVERecord?id=CVE-2026-58076"}, {"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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