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Apache DolphinScheduler CVE-2026-71899

| EUVDEUVD-2026-88816 MEDIUM
Incorrect Authorization (CWE-863)
2026-09-29 apache GHSA-cmrj-w8v5-mv8v
6.5
CVSS 3.1 · Vendor: apache
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Severity by source

Vendor (apache) PRIMARY
6.5 LOW
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
4.3 MEDIUM

Remote API call over network (AV:N), low complexity (AC:L), needs a low-privilege authenticated account (PR:L), no user interaction; confidentiality-only disclosure of workflow metadata (C:L), no integrity/availability impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (apache).

CVSS VectorVendor: apache

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
CVSS changed
Oct 01, 2026 - 16:22 NVD
6.5 (MEDIUM)
Metadata Corrected
Sep 29, 2026 - 14:40 vuln.today
tag: Java added
Patch available
Sep 29, 2026 - 14:02 EUVD
Analysis Generated
Sep 29, 2026 - 13:51 vuln.today

DescriptionCVE.org

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.

AnalysisAI

Information disclosure in Apache DolphinScheduler 3.2.0 through versions before 3.4.3 lets any authenticated low-privilege user read workflow information belonging to projects they are not authorized to access by calling the query-dynamic-sub-workflows API endpoint, which authenticates the caller but omits the project-scope authorization check (CWE-863). The independent assessment rates this CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - network-reachable but requiring a valid account, with impact confined to confidentiality and no write or code-execution path. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Requires a valid authenticated DolphinScheduler account (any low-privilege user) and network reachability to the API. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a real but low-severity access-control flaw, not a high-CVSS emergency. … 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 Upgrade to Apache DolphinScheduler 3.4.3, which is the vendor-released fix for this issue (patch available per the Apache advisory at https://lists.apache.org/thread.html/qcork1j6q52xsp419vgb5dsstp9mxk09); this is the only fully corrective action, since the flaw is an in-code missing authorization check that cannot be corrected by configuration alone and no upstream patch commit or backport to the 3.2.x/3.3.x lines was provided in the input data. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-71899 vulnerability details – vuln.today

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