Executive brief
XXL-JOB is a popular distributed task scheduling framework used to manage and execute automated business processes. A security flaw allows any logged-in user to view the execution logs of tasks they are not authorized to see. This could lead to the exposure of sensitive information, such as database passwords or internal system details, that may be contained within those logs.
Technical details
An Insecure Direct Object Reference (IDOR) vulnerability exists in the JobLogController.java component of XXL-JOB. The 'logDetailCat' endpoint fails to implement the 'validJobGroupPermission' check used by its sibling endpoint 'logDetailPage'. An authenticated attacker can exploit this by providing incremented 'logId' parameters to the endpoint, allowing them to enumerate and retrieve sensitive execution logs across all job groups regardless of their assigned permissions. The vulnerability is confirmed in version 2.4.2 and the current master branch (commit 71530be).
Affected products
- xuxueli XXL-JOB <= 2.4.2
Timeline
- 2026-05-27: other: Vulnerability reported privately to vendor via email
- 2026-07-02: disclosed: Public issue opened on GitHub repository
- 2026-07-21: advisory: CVE published and NVD record created