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CVE-2026-66084— Apache DolphinScheduler: Project Authorization Bypass in the Task Definition with-upstream Endpoint

Quick assessment

Affected
Apache Software Foundation Apache DolphinScheduler
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache DolphinScheduler 中存在一个权限绕过漏洞，允许已认证用户通过 端点，修改其无权访问的项目中的任务定义。 该端点未验证由 标识的任务定义是否属于由 指定的项目。已认证用户可以提供其有权访问的项目代码，并结合另一个项目中的任务定义代码，从而绕过项目访问限制，修改目标任务定义及其上游依赖项。 此漏洞可能破坏工作流的完整性，并导致未经授权项目中的任务执行中断。该问题影响 Apache DolphinScheduler 3.4.3 之前的所有版本。 建议用户升级至 3.4.3 版本，该版本已修复

AI Predicted 8.1 Difficulty: Easy

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts
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I. Basic Information for CVE-2026-66084

Vulnerability Information
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Vulnerability Title
Apache DolphinScheduler: Project Authorization Bypass in the Task Definition with-upstream Endpoint
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache DolphinScheduler 0 ~ 3.4.3 -

II. Public POCs for CVE-2026-66084

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III. Intelligence Information for CVE-2026-66084

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Other References for CVE-2026-66084 (1)

Same Patch Batch · Apache Software Foundation · 2026-10-08 · 6 CVEs total

CVE-2026-71896 Apache DolphinScheduler: Missing Authorization Checks Allow Unauthorized Disclosure of Use
CVE-2026-71895 Apache DolphinScheduler: Missing Authorization Checks Allow Non-Admin Users to Retrieve Ku
CVE-2026-71183 Apache DolphinScheduler: Missing Authorization Checks Allow Disclosure of Data Source Info
CVE-2026-66087 Apache DolphinScheduler: Project Authorization Bypass in the Task instance stop/savepoint
CVE-2026-66082 Apache DolphinScheduler: Cross-project authorization bypasses in DolphinScheduler API (sch

IV. Related Vulnerabilities

Same product: Apache DolphinScheduler
Same vendor: Apache Software Foundation
Same weakness: CWE-863

V. Comments for CVE-2026-66084

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