---
id: CVE-2026-66084
title: >-
  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/{co…
summary: >-
  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/{co…
severity: none
cwe:
  - CWE-863
vendor: Apache Software Foundation
product: 'org.apache.dolphinscheduler:dolphinscheduler-api'
affected:
  - 'org.apache.dolphinscheduler:dolphinscheduler-api < 3.4.3'
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T10:17:09.727'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-66084'
references:
  - url: 'https://lists.apache.org/thread.html/cn6v1m8pfnjn7rsqkq1xow8v63pw27w2'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/10/08/2'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-08T09:24:18.229Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.