{"api_version":"1","generated_at":"2026-08-12T18:05:53+00:00","cve":"CVE-2026-67587","urls":{"html":"https://cve.report/CVE-2026-67587","api":"https://cve.report/api/cve/CVE-2026-67587.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-67587","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-67587"},"summary":{"title":"Apache Airflow: DAG-author remote code execution on the Scheduler via a Serde `Callback` deserialization gadget","description":"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 — who controls a task instance's `next_kwargs` through the task execution API — 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 — applying either of those fixes does not address this one. Users are advised to upgrade to apache-airflow 3.3.1 or later.","state":"PUBLISHED","assigner":"apache","published_at":"2026-08-12 16:17:15","updated_at":"2026-08-12 16:17:15"},"problem_types":["CWE-502","CWE-502 CWE-502: Deserialization of Untrusted Data"],"metrics":[],"references":[{"url":"https://github.com/apache/airflow/pull/70704","name":"https://github.com/apache/airflow/pull/70704","refsource":"security@apache.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://lists.apache.org/thread/o00ww4n69qojvsckb464dtwd2nhzy6t0","name":"https://lists.apache.org/thread/o00ww4n69qojvsckb464dtwd2nhzy6t0","refsource":"security@apache.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-67260","name":"https://www.cve.org/CVERecord?id=CVE-2026-67260","refsource":"security@apache.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-58076","name":"https://www.cve.org/CVERecord?id=CVE-2026-58076","refsource":"security@apache.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-67587","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67587","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Apache Software Foundation","product":"Apache Airflow","version":"affected 3.3.0 3.3.1 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Nguyen Van Hiep (@hypnguyen1209), MBBank","lang":"en"},{"source":"CNA","value":"Jarek Potiuk","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"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 — who controls a task instance's `next_kwargs` through the task execution API — 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 — 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 — who controls a task instance's `next_kwargs` through the task execution API — 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 — 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":{"dateUpdated":"2026-08-12T15:32:10.565Z","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache"},"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"}}},"cveMetadata":{"assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","assignerShortName":"apache","cveId":"CVE-2026-67587","datePublished":"2026-08-12T15:32:10.565Z","dateReserved":"2026-07-29T19:47:18.427Z","dateUpdated":"2026-08-12T15:32:10.565Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-12 16:17:15","lastModifiedDate":"2026-08-12 16:17:15","problem_types":["CWE-502","CWE-502 CWE-502: Deserialization of Untrusted Data"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"67587","Ordinal":"1","Title":"Apache Airflow: DAG-author remote code execution on the Schedule","CVE":"CVE-2026-67587","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"67587","Ordinal":"1","NoteData":"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 — who controls a task instance's `next_kwargs` through the task execution API — 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 — applying either of those fixes does not address this one. Users are advised to upgrade to apache-airflow 3.3.1 or later.","Type":"Description","Title":"Apache Airflow: DAG-author remote code execution on the Schedule"}]}}}