CVE-2026-66083

Apache DolphinScheduler: Unauthorized Disclosure of Data Source Information via /datasources/unauth-datasource

Published Sep 29, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
The /datasources/unauth-datasource endpoint does not properly enforce data source authorization. An authenticated user can invoke this endpoint to obtain information about data sources they are not authorized to access. This may expose data source configuration and other sensitive metadata, depending on the fields returned by the endpoint.



This issue affects Apache DolphinScheduler: before 3.4.3.



Users are recommended to upgrade to version 3.4.3, which fixes the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:dolphinscheduler:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Apache
Apache dolphinscheduler
Vendors & Products Apache
Apache dolphinscheduler
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The /datasources/unauth-datasource endpoint does not properly enforce data source authorization. An authenticated user can invoke this endpoint to obtain information about data sources they are not authorized to access. This may expose data source configuration and other sensitive metadata, depending on the fields returned by the endpoint. This issue affects Apache DolphinScheduler: before 3.4.3. Users are recommended to upgrade to version 3.4.3, which fixes the issue.
Title Apache DolphinScheduler: Unauthorized Disclosure of Data Source Information via /datasources/unauth-datasource
Weaknesses CWE-306
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Sep 29, 2026, 8:16 PM
Reserved
Jul 24, 2026, 2:02 AM
Status
Analyzed
Published
Sep 29, 2026, 12:17 PM
Modified
Oct 6, 2026, 2:37 PM