CVE-2026-66084 Details
Description
An authorization bypass vulnerability in Apache DolphinScheduler allows authenticated users to modify task definitions in projects they are not authorized to access through the /dolphinscheduler/projects/{projectCode}/task-definition/{code}/with-upstream endpoint. The endpoint fails to verify that the task definition identified by code belongs to the project specified by projectCode. An authenticated user can supply the code of a project they are authorized to access together with a task definition code from another project, bypassing project access restrictions and modifying the target task definition and its upstream dependencies. This vulnerability can compromise workflow integrity and disrupt task execution in unauthorized projects.This issue affects Apache DolphinScheduler: before 3.4.3. Users are recommended to upgrade to version 3.4.3, which fixes the issue.
A project authorization bypass vulnerability exists in Apache DolphinScheduler versions prior to 3.4.3. This vulnerability allows authenticated users to modify task definitions in unauthorized projects via the '/dolphinscheduler/projects/{projectCode}/task-definition/{code}/with-upstream' endpoint. The vulnerability arises because the endpoint does not properly verify the association between task definitions and their respective projects. As a result, an authenticated user can exploit this flaw by using task definition codes from unauthorized projects, thereby bypassing access restrictions and disrupting workflow integrity in those projects.
Users are advised to upgrade to Apache DolphinScheduler version 3.4.3 or later, which addresses this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 8, 2026CISA-ADP
Assessed Oct 8, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/10/08/2 | CVE | AdvisoryMailing ListRemedy |
| https://lists.apache.org/thread.html/cn6v1m8pfnjn7rsqkq1xow8v63pw27w2 | [email protected] | AdvisoryMailing ListRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Apache DolphinScheduler | < 3.4.3 (semver) |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 8, 2026 | CVE Modified | CISA-ADP |
| Oct 8, 2026 | CVE Modified | CVE |
| Oct 8, 2026 | New CVE Received | [email protected] |