{"cve":"CVE-2026-67260","nvd":{"published":"2026-08-12T16:17:14.813","modified":"2026-10-24T16:10:00.153","status":"Analyzed","description":"Apache Airflow 3.3.0 moved human-in-the-loop tasks from the triggerer to a new `awaiting_input` task state swept by the scheduler. That sweep deserializes the task instance's `next_kwargs` without an allow-list, so a Dag author — who controls that value through the task execution API — can cause an arbitrary module import and object instantiation inside the scheduler process, or terminate the scheduler job. No non-default configuration is required: the sweep runs unconditionally every 15 seconds, and the default `allowed_deserialization_classes` setting does not cover this code path. Versions before 3.3.0 are not affected, because human-in-the-loop tasks deferred onto the triggerer instead. This is a different code path from CVE-2026-58076, which covers the same unguarded exception-node deserialization reached elsewhere — deployments that applied that fix must upgrade for this issue as well. Users are advised to upgrade to apache-airflow 3.3.1 or later.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","score":7.3},"cwes":["CWE-502"],"references":["https://github.com/apache/airflow/pull/70685","https://lists.apache.org/thread/vygr0fh82cjzjp5k4vtfmboxryvm3lyn","https://www.cve.org/CVERecord?id=CVE-2026-58076"],"products":["apache:airflow"],"source":"nvd","synced_at":"2026-10-24T16:53:35.584907681+00:00"},"epss":{"cve":"CVE-2026-67260","score":0.00779,"percentile":0.55616,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-q4c3-7575-55j2","url":"https://osv.dev/vulnerability/GHSA-q4c3-7575-55j2","summary":"Apache Airflow scheduler unsafely deserializes human-in-the-loop task next_kwargs","modified":"2026-10-02T23:41:04.597715151Z","packages":[{"ecosystem":"PyPI","name":"apache-airflow","purl":"pkg:pypi/apache-airflow","ranges":[">=3.3.0 <3.3.1"],"fixed":["3.3.1"]}]},{"id":"PYSEC-2026-3707","url":"https://osv.dev/vulnerability/PYSEC-2026-3707","summary":"","modified":"2026-10-15T14:45:06.283288132Z","packages":[{"ecosystem":"PyPI","name":"apache-airflow","purl":"pkg:pypi/apache-airflow","ranges":[">=3.3.0 <3.3.1"],"fixed":["3.3.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}