CVE-2026-71899: Apache DolphinScheduler: Missing Authorization in query-dynamic-sub-workflows API Leads to Information Disclosure
A missing authorization vulnerability exists in the query-dynamic-sub-workflows API of Apache DolphinScheduler. The API does not properly verify whether the authenticated user has permission to access the workflows being queried.
An authenticated user who does not have permission to access a specific project can invoke the API with parameters referencing workflows belonging to that project and retrieve workflow information. This allows users to access workflow data outside their authorized project scope, resulting in unauthorized information disclosure.
This issue affects Apache DolphinScheduler: from 3.2.0 before 3.4.3.
Users are recommended to upgrade to version 3.4.3, which fixes the issue.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Apache DolphinSchedulerto a version that resolves this vulnerability.Fixed in 3.4.3
Event History
Frequently Asked Questions
Who can exploit this issue?
An authenticated Apache DolphinScheduler user can exploit it, even if they do not have permission to access the project containing the referenced workflows. The issue is limited to retrieving workflow information through the query-dynamic-sub-workflows API.
Which deployments are affected?
Apache DolphinScheduler versions from 3.2.0 up to, but not including, 3.4.3 are affected. Version 3.4.3 fixes the authorization check.
What should teams do if they cannot upgrade immediately?
No interim mitigation is provided in the available information. Prioritize restricting access to authenticated users who do not need to query workflow data and upgrade to 3.4.3 as soon as possible.