Auth Bypass: Private Data Source Leak in Apache DolphinScheduler <3.4.3
CVE-2026-71183 Published on October 8, 2026
Apache DolphinScheduler: Missing Authorization Checks Allow Disclosure of Data Source Information and Passwords
An authorization vulnerability in Apache DolphinScheduler allows authenticated users to obtain information about data sources they are not authorized to access through the /unauth-datasource and /authed-datasource endpoints.
These endpoints fail to enforce the required data source access controls and return sensitive connection information, including data source passwords. As a result, an authenticated user without permission to access a data source can retrieve its connection details and credentials.
Successful exploitation exposes sensitive data source information and may enable unauthorized access to the underlying databases using the disclosed credentials.
This issue affects Apache DolphinScheduler: before 3.4.3.
Users are recommended to upgrade to version 3.4.3, which fixes the issue.
Vulnerability Analysis
CVE-2026-71183 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is an AuthZ Vulnerability?
The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
CVE-2026-71183 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-71183
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Affected Versions
Apache Software Foundation Apache DolphinScheduler:- Before 3.4.3 is affected.