CVE-2026-41018

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.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 35% of CVEs (scores of 2026-10-26)

CWE

CWE-532

Published

2026-05-11

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• apache:apache-airflow-providers-elasticsearch

Packages (OSV)

References

• https://github.com/apache/airflow/pull/65349
• https://lists.apache.org/thread/wz5l58drprmwlv6jxnq466x24jqbbhp7
• http://www.openwall.com/lists/oss-security/2026/05/10/3

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