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CVE-2026-43826— Apache Airflow Providers OpenSearch: OpenSearch task-log handler leaks credentials embedded in the host URL

Quick assessment

Affected
Apache Software Foundation Apache Airflow Providers OpenSearch
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Airflow是美国阿帕奇（Apache）基金会的一套具有创建、管理和监控工作流程功能的开源平台。该平台具有可扩展和动态监控等特点。 Apache Airflow OpenSearch Provider存在日志信息泄露漏洞，该漏洞源于OpenSearch日志记录提供程序在配置嵌入凭据的host URL时，将完整主机URL写入任务日志，可能导致具有任务日志读取权限的用户获取后端凭据。

AI Predicted 5.9 Difficulty: Easy EPSS 0.66% · P51

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Airflow Providers OpenSearch < 1.9.1 affected
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I. Basic Information for CVE-2026-43826

Vulnerability Information
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Vulnerability Title
Apache Airflow Providers OpenSearch: OpenSearch task-log handler leaks credentials embedded in the host URL
Source: CVE Program / CVE List V5
Vulnerability Description
The OpenSearch 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-opensearch` 1.9.1 or later and, as a defense-in-depth measure, configure the backend credentials via a secret backend rather than embedding them in the `[opensearch] host` URL.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
通过日志文件的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Airflow 日志信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Airflow是美国阿帕奇（Apache）基金会的一套具有创建、管理和监控工作流程功能的开源平台。该平台具有可扩展和动态监控等特点。 Apache Airflow OpenSearch Provider存在日志信息泄露漏洞，该漏洞源于OpenSearch日志记录提供程序在配置嵌入凭据的host URL时，将完整主机URL写入任务日志，可能导致具有任务日志读取权限的用户获取后端凭据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Airflow Providers OpenSearch 0 ~ 1.9.1 -

II. Public POCs for CVE-2026-43826

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III. Intelligence Information for CVE-2026-43826

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Patches & Fixes for CVE-2026-43826 (1)

Mailing List Discussions for CVE-2026-43826 (1)

IV. Related Vulnerabilities

Same vendor: Apache Software Foundation
Same weakness: CWE-532

V. Comments for CVE-2026-43826

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