{"id":"CVE-2026-58076","aliases":[],"cve":{"records":[{"id":"CVE-2026-58076","source":"apache","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-06-28T15:16:00.339Z","published":"2026-08-12T15:40:59.934Z","modified":"2026-11-03T06:58:44.859Z"}],"publishers":[{"name":"apache","role":"CNA","organizationId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","modified":"2026-11-03T06:58:44.859Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-08-18T19:53:31.027Z"}],"references":[{"url":"https://github.com/apache/airflow/pull/68511","tags":["patch"],"source":"apache"},{"url":"https://lists.apache.org/thread/t81p688t15jozxsng8521o60nh2kfsos","tags":["vendor-advisory"],"source":"apache"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-33264","tags":["related"],"source":"apache"}],"weaknesses":[{"id":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","source":"apache"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-08-18T13:43:21.351742Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"Apache Airflow: Unguarded import_string() of airflow_exc_ser / base_exc_ser exception nodes in BaseSerialization.deserialize enables DAG-author RCE on Scheduler / API Server","titleSource":"apache","descriptionSource":"apache","description":"Apache Airflow's serialization layer reconstructed exception nodes by calling `import_string()` on a class name taken from the serialized blob and instantiating it with arguments from the same blob, with no restriction on what could be imported. An operator's `executor_config` reaches that branch, so a Dag author could place a value there that causes an arbitrary callable to be imported and invoked -- for example `subprocess.check_output`, or `builtins.eval` on the `builtins`-prefixed variant. The code runs in the **Scheduler**, which reconstructs serialized Dags in its normal loop with no request involved, and in the **API server**, on any authenticated read of the Dag such as `GET /api/v2/dags/{dag_id}/details`. Both are components the Airflow security model states must never execute Dag-author code, and both hold the metadata database credentials and the JWT signing secret. No non-default configuration is required. This is a **different sink from CVE-2026-33264**, which covered only the trigger branch of the same deserializer: deployments that upgraded in response to that advisory are still affected through the exception branch and must upgrade again. Users are advised to upgrade to apache-airflow 3.3.1 or later, which restricts the imported class to a subclass of `BaseException`.","score":8.8,"severity":"high","published":"2026-08-12T15:40:59.934Z","modified":"2026-11-03T06:58:44.859Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Apache Software Foundation","name":"Apache Airflow","platforms":[],"versions":[{"version":"3.0.0","status":"affected","lessThan":"3.3.1","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:pypi/apache-airflow-core","packageIdentity":{"ecosystem":"PyPI","name":"apache-airflow-core"},"cpes":[],"source":"apache","url":"https://www.cve.org/CVERecord?id=CVE-2026-58076"}],"remediation":[],"references":["https://github.com/apache/airflow/pull/68511","https://lists.apache.org/thread/t81p688t15jozxsng8521o60nh2kfsos","https://www.cve.org/CVERecord?id=CVE-2026-33264"],"sources":[{"name":"CVE","id":"CVE-2026-58076","modified":"2026-11-03T06:58:44.859Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-58076"}],"assessments":[{"source":"CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8}],"sourceAffected":[],"observedAt":"2026-11-03T07:11:23.659Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T00:20:33.177Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-03T07:30:34.542Z","attemptedAt":"2026-11-03T07:30:34.542Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-03T07:30:35.061Z","attemptedAt":"2026-11-03T07:30:35.061Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-03T07:30:35.146Z","attemptedAt":"2026-11-03T07:30:35.146Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-03T07:30:34.386Z","attemptedAt":"2026-11-03T07:30:34.386Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-58076","url":"https://www.first.org/epss/","probability":0.00484,"percentile":0.41706,"date":"2026-11-02","checkedAt":"2026-11-03T07:30:34.386Z"},{"source":"NVD","id":"CVE-2026-58076","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58076","modified":"2026-11-03T07:20:55.730","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-11-03T07:30:34.542Z"},{"source":"NVD","id":"CVE-2026-58076","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58076","modified":"2026-11-03T07:20:55.730","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-11-03T07:30:34.542Z"},{"source":"GitHub Advisory Database","id":"GHSA-8prw-8m6x-8w6f","url":"https://github.com/advisories/GHSA-8prw-8m6x-8w6f","modified":"2026-10-02T23:12:36Z","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-11-03T07:30:35.061Z"},{"source":"ENISA EUVD","id":"EUVD-2026-57315","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-57315","modified":"Sep 16, 2026, 2:55:55 PM","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-11-03T07:30:35.146Z"}],"aiSummary":{"text":"Apache Airflow versions before 3.3.1 are affected by a deserialization vulnerability, allowing a DAG author to execute arbitrary code on the Scheduler and API Server. The vulnerability occurs due to unguarded import_string() calls. An attacker with authenticated access can exploit this weakness.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-03T07:16:09.911Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-58076"}]}}