{"schema":"threatline.record/2","record":{"id":"CVE-2026-67260","aliases":["BIT-airflow-2026-67260","GHSA-q4c3-7575-55j2","PYSEC-2026-3707"],"summary":"Apache Airflow scheduler unsafely deserializes human-in-the-loop task next_kwargs","details":"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.","categories":["Libraries & packages"],"product":"apache-airflow","vendor":"Apache Software Foundation","ecosystem":"pip","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-q4c3-7575-55j2","source_modified_at":"2026-10-02T23:15:50Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"pip","name":"apache-airflow"},"range":">= 3.3.0, < 3.3.1"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-67260","source_modified_at":"2026-09-16T14:56:08.113Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Apache Airflow","vendor":"Apache Software Foundation","versions":[{"lessThan":"3.3.1","status":"affected","version":"3.3.0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-q4c3-7575-55j2","source_modified_at":"2026-10-02T23:41:04.597715151Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"apache-airflow","ecosystem":"PyPI","purl":"pkg:pypi/apache-airflow"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.3.0"},{"fixed":"3.3.1"}]}],"versions":["3.3.0","3.3.1rc1","3.3.1rc2"]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-q4c3-7575-55j2","source_modified_at":"2026-10-02T23:15:50Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"pip","name":"apache-airflow"},"version":"3.3.1"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-67260","source_modified_at":"2026-09-16T14:56:08.113Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Apache Airflow","ecosystem":null},"version":"3.3.1","basis":"first unaffected version stated in the CVE record"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-q4c3-7575-55j2","source_modified_at":"2026-10-02T23:41:04.597715151Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"apache-airflow","ecosystem":"PyPI","purl":"pkg:pypi/apache-airflow"},"version":"3.3.1"}],"cvss":7.3,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00779,"percentile":0.5544,"score_date":"2026-10-23"},"published_at":"2026-08-12T15:33:02.858Z","modified_at":"2026-10-02T23:41:04.597715151Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-q4c3-7575-55j2","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-02T23:15:50Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-67260","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-09-16T14:56:08.113Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-q4c3-7575-55j2","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-02T23:41:04.597715151Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-67260","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67260","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/apache/airflow/pull/70685","tags":["patch"]},{"source":"CVE List","url":"https://lists.apache.org/thread/vygr0fh82cjzjp5k4vtfmboxryvm3lyn","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-58076","tags":["related"]},{"url":"https://github.com/apache/airflow/commit/18b622920cf0f486155075125ecdcabc752b1eca","source":"GitHub Advisory Database"},{"url":"https://github.com/apache/airflow/commit/a1ab0653121829675ad864080d2cd9d3d1688b01","source":"GitHub Advisory Database"},{"url":"https://github.com/apache/airflow/releases/tag/3.3.1","source":"GitHub Advisory Database"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-3707.yaml","source":"GitHub Advisory Database"},{"url":"https://github.com/advisories/GHSA-q4c3-7575-55j2","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-08-12T16:00:14.166719Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-02T23:41:04.597715151Z","content_hash":"3816992ccfb533ae1440877edb301493b7225a8549ff9ead8e6287d7dd151ba5"}}