EUVD-2026-88742
GHSA-rjm2-8fmf-7h67
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Network-facing web endpoint (AV:N/AC:L) reachable by any authenticated user (PR:L); confidentiality-only disclosure of metadata rated C:L given hedged fields, no integrity or availability impact.
Primary rating from Vendor (apache).
CVSS VectorVendor: apache
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Information disclosure in Apache DolphinScheduler before 3.4.3 allows any authenticated user to call the /datasources/unauth-datasource endpoint and retrieve configuration and metadata for data sources they are not authorized to see. As assessed, exploitation requires a valid low-privileged account and network reachability to the web application (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N), and it is most impactful in multi-tenant deployments where data sources are meant to be isolated between users; the breadth of leaked fields is not specified by the vendor, so confidentiality impact depends on the deployment. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires a valid authenticated DolphinScheduler user account (any privilege level) plus network access to the web application; the attacker simply invokes the /datasources/unauth-datasource endpoint, which fails to enforce per-user data source authorization. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a broken-access-control (information disclosure) flaw in Apache DolphinScheduler, not a high-severity RCE. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: Apache DolphinScheduler 3.4.3; upgrade all API and web nodes to 3.4.3 or later and then rotate or re-scope any data source credentials that may have been exposed to unauthorized users (see the advisory at https://lists.apache.org/thread/b6brfom0jmy9kdt40qrn6dq0x4v2wxdr). … Detailed patch versions, workarounds, and compensating controls in full report. |
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