{"items":[{"id":"NVI-00017671","kind":"vulnerability","title":"Apache Airflow has no certificate validation on SMTP STARTTLS connections","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-799x-qp47-8qwq","CVE-2026-49267"],"plain_summary":"GitHub lists this reviewed advisory for apache-airflow. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-40dc50ef8579aaf1483e516e7cd07926"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-09T21:11:46.000Z","value":"5.9 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-40dc50ef8579aaf1483e516e7cd07926"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-40dc50ef8579aaf1483e516e7cd07926","url":"https://github.com/advisories/GHSA-799x-qp47-8qwq","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-799x-qp47-8qwq","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T23:34:40.400Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-40dc50ef8579aaf1483e516e7cd07926"],"technology":"apache-airflow","known_exclusions":[],"conditions_summary":"Apache Airflow's EmailOperator and the underlying `airflow.utils.email` helpers established SMTP STARTTLS connections without verifying the remote certificate when the deployment used `[email] smtp_starttls=True` without `[email] smtp_ssl`. An attacker positioned between the worker and the configured SMTP server (network MITM — typical hostile-network attack-surface for environments where the SMTP relay sits outside the worker's trust boundary) could present a self-signed certificate, have the worker complete the STARTTLS handshake silently, and capture the SMTP AUTH credentials and message contents the worker forwarded.\n\nThis CVE covers the **core apache-airflow side** of the same root cause already covered for the SMTP provider by `CVE-2026-41016` (published 2026-04-27, covering `apache-airflow-providers-smtp`). Users who already applied the SMTP-provider fix from CVE-2026-41016 should additionally upgrade `apache-airflow` to 3.2.2 or later to cover the core-side path through `airflow.utils.email`. Affects deployments configured with `smtp_starttls=True` and `smtp_ssl=False` where the SMTP relay is reachable across a less-trusted network segment than the worker.\n\nUsers are advise","public_affected_ranges":[">= 2.0.0, < 3.2.2"]}],"null_published_at":"2026-11-05T19:10:21.449Z","source_updated_at":"2026-07-09T21:11:46.000Z","source_disclosed_at":"2026-06-01T09:31:15.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-04T23:34:40.400Z"}],"next_cursor":null,"snapshot_revision":"42594"}