{"schema_version": "1.6.1", "id": "CVE-2026-41018", "summary": "Elasticsearch task-log handler leaks credentials embedded in the host URL", "details": "The Elasticsearch logging provider, when configured with a `host` URL that embeds credentials (for example `https://user:password@server.example.com:9200`), wrote the full host URL — including the embedded credentials — into task logs. Any user with task-log read permission could harvest the backend credentials. Users are advised to upgrade to `apache-airflow-providers-elasticsearch` 6.5.3 or later and, as a defense-in-depth measure, configure the backend credentials via a secret backend rather than embedding them in the `[elasticsearch] host` URL.", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "0"}, {"fixed": "6.5.3"}]}]}], "references": [{"type": "WEB", "url": "https://github.com/apache/airflow/pull/65349"}, {"type": "WEB", "url": "https://lists.apache.org/thread/wz5l58drprmwlv6jxnq466x24jqbbhp7"}]}