CVE-2026-66083
This may expose data source configuration and other sensitive metadata, depending on the fields returned by the endpoint.
Does this matter?
Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.30% probability · 23th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-306
- Affected
- apache/dolphinscheduler
- Source
- security@apache.org
EPSS moved from 0.2% on 30 September 2026 to 0.3% on 26 October 2026.
References
- https://lists.apache.org/thread/b6brfom0jmy9kdt40qrn6dq0x4v2wxdrVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/09/29/19Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.