{"id":"CVE-2026-66084","published":"2026-10-08T09:16:41.783","lastModified":"2026-10-08T21:18:01.973","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.\n\n\n\nThe 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.\n\n\n\nThis vulnerability can compromise workflow integrity and disrupt task execution in unauthorized projects.This issue affects Apache DolphinScheduler: before 3.4.3.\n\n\n\nUsers are recommended to upgrade to version 3.4.3, which fixes the issue.","cvssScore":8.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","cwes":["CWE-863"],"vendors":[],"products":[],"references":[{"url":"https://lists.apache.org/thread.html/cn6v1m8pfnjn7rsqkq1xow8v63pw27w2","tags":[]},{"url":"http://www.openwall.com/lists/oss-security/2026/10/08/2","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"An authorization bypass flaw in Apache DolphinScheduler allows authenticated users to modify task definitions in projects they shouldn't have access to by exploiting a missing validation check on the project-task relationship. This can lead to unauthorized workflow modifications and execution disruptions.","exploitability":"Exploitation is straightforward for authenticated users who know the target project's code and another project's task definition code, requiring no special prerequisites beyond basic access to the affected endpoint.","blast_radius":"The vulnerability could allow attackers to silently modify critical workflow definitions in unauthorized projects, potentially causing execution failures or data integrity issues across multiple workflows without detection.","remediation":"Upgrade to Apache DolphinScheduler 3.4.3 which fixes the authorization bypass issue.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","workflow","authorization","api"],"model":"garnet-coder","analyzedAt":"2026-10-16T09:20:45.513Z"}}