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CVE-2026-41018

Apache Airflow Providers Elasticsearch: Elasticsearch task-log handler leaks credentials embedded in the host URL

6.5 MediumFix available

The Elasticsearch logging provider, when configured with a host URL that embeds credentials (for example https://user:[email protected]: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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.41%Up 0.4 points since May 11, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.5

Apache Airflow Providers Elasticsearch: Elasticsearch task-log handler leaks credentials embedded in the host URL

The Elasticsearch logging provider, when configured with a host URL that embeds credentials (for example https://user:[email protected]: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.

Record
CVE-2026-41018
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-532
Updated
2026-11-02
EUVDEUVD-2026-29040 6.5

The Elasticsearch logging provider, when configured with a host URL that embeds credentials (for example https://user:[email protected]: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.

Record
EUVD-2026-29040
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-g3jr-4jrm-jvqv 6.5

Apache Airflow Providers Elasticsearch: Elasticsearch task-log handlers leak credentials embedded in the host URL

The Elasticsearch logging provider, when configured with a host URL that embeds credentials (for example https://user:[email protected]: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.

Record
GHSA-g3jr-4jrm-jvqv
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-532
Updated
2026-11-02
NVD 6.5

The Elasticsearch logging provider, when configured with a host URL that embeds credentials (for example https://user:[email protected]: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.

Record
CVE-2026-41018
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-532
Updated
2026-11-02
OSV 6.5

Apache Airflow Providers Elasticsearch: Elasticsearch task-log handler leaks credentials embedded in the host URL

The Elasticsearch logging provider, when configured with a host URL that embeds credentials (for example https://user:[email protected]: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.

Record
CVE-2026-41018
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-532
Updated
2026-11-02
OSVGHSA-g3jr-4jrm-jvqv 6.5

Apache Airflow Providers Elasticsearch: Elasticsearch task-log handlers leak credentials embedded in the host URL

The Elasticsearch logging provider, when configured with a host URL that embeds credentials (for example https://user:[email protected]: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.

Record
GHSA-g3jr-4jrm-jvqv
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-532
Updated
2026-11-02
OSVPYSEC-2026-22 6.5

The Elasticsearch logging provider, when configured with a host URL that embeds credentials (for example https://user:[email protected]: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.

Record
PYSEC-2026-22
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2026-41018 6.5

The Elasticsearch logging provider, when configured with a host URL that embeds credentials (for example https://user:[email protected]: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.

Record
UBUNTU-CVE-2026-41018
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
apache-airflow-providers-elasticsearch
PyPI
before 6.5.3
6.5.3
apache-airflow-providers-elasticsearch
PyPI
before 6.5.3, plus listed versions
1.0.01.0.0b11.0.0b21.0.0rc11.0.1
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1.0.1rc11.0.21.0.2rc11.0.31.0.3rc11.0.41.0.4rc12.0.02.0.0rc12.0.12.0.1rc12.0.22.0.2rc12.0.2rc22.0.32.0.3rc12.1.02.1.0rc12.2.02.2.0rc33.0.03.0.0rc13.0.13.0.1rc13.0.23.0.2rc13.0.33.0.3rc14.0.04.0.0rc14.0.0rc24.1.04.1.0rc14.2.04.2.0rc14.2.0rc24.2.0rc34.2.14.2.1rc14.3.04.3.0rc14.3.14.3.1rc24.3.1rc34.3.2
6.5.3
elasticsearch
Ubuntu:16.04:LTS
All versions, plus listed versions
1.6.2+dfsg-11.7.3+dfsg-11.7.3+dfsg-21.7.3+dfsg-3
None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-41018 is a medium vulnerability (CVSS 6.5) in Apache Apache-airflow-providers-elasticsearch, published May 11, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.41%, the 35th percentile. Fixed in apache-airflow-providers-elasticsearch 6.5.3.

References

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