CVE-2026-66083

EUVD-2026-88742

29.09.2026, 12:17

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	6.5 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 23.61%

Affected Products (NVD)

Vendor	Product	Version
apache	dolphinscheduler	𝑥 < 3.4.3

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-306 - Missing Authentication for Critical Function
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

References

https://lists.apache.org/thread/b6brfom0jmy9kdt40qrn6dq0x4v2wxdr

http://www.openwall.com/lists/oss-security/2026/09/29/19