CVE-2023-48087 in xxl-job-admin
Summary
by MITRE • 11/15/2023
xxl-job-admin 2.4.0 is vulnerable to Insecure Permissions via /xxl-job-admin/joblog/clearLog and /xxl-job-admin/joblog/logDetailCat.
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Analysis
by VulDB Data Team • 10/25/2025
The vulnerability identified as CVE-2023-48087 affects xxl-job-admin version 2.4.0 and represents a critical insecure permissions flaw that allows unauthorized users to access sensitive logging information through specific API endpoints. This issue resides within the joblog management functionality of the distributed task scheduling platform, where the system fails to properly validate user permissions before exposing log data processing capabilities. The affected endpoints /xxl-job-admin/joblog/clearLog and /xxl-job-admin/joblog/logDetailCat provide direct access to log clearing and detailed log retrieval operations without adequate authentication checks, creating a significant security risk for organizations relying on this job scheduling solution.
The technical implementation of this vulnerability stems from insufficient input validation and access control mechanisms within the xxl-job-admin web application. When users make requests to the clearLog and logDetailCat endpoints, the system does not properly verify whether the requesting user possesses the necessary administrative privileges or authorization levels required to perform these operations. This design flaw allows attackers with minimal privileges or those who have discovered the endpoint URLs to execute log clearing operations that could erase critical audit trails or access detailed job execution information that should remain restricted to authorized administrators. The vulnerability essentially creates a backdoor access point that bypasses normal authentication and authorization workflows, enabling privilege escalation through log manipulation activities.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass potential system integrity compromise and audit trail manipulation. Attackers can leverage this weakness to clear job execution logs that would normally contain evidence of system operations, making it difficult for security teams to investigate incidents or track system behavior. Additionally, the logDetailCat endpoint provides access to detailed job execution information including parameters, execution results, and potentially sensitive data processed by scheduled jobs, which could expose confidential business information or system configurations. Organizations using xxl-job-admin for critical automation tasks face increased risk of undetected malicious activities, as the ability to manipulate log data undermines the integrity of system monitoring and incident response capabilities.
Mitigation strategies for this vulnerability should prioritize immediate implementation of proper authentication and authorization checks across all joblog endpoints. System administrators must ensure that access to clearLog and logDetailCat functions is restricted to users with explicit administrative privileges and that proper session management is enforced. The recommended approach involves implementing role-based access control mechanisms that validate user permissions before allowing execution of sensitive log operations. Organizations should also consider implementing additional security controls such as input sanitization, rate limiting on log operations, and comprehensive logging of all access attempts to these endpoints. This vulnerability aligns with CWE-284 Access Control Issues and can be mapped to ATT&CK technique T1562.001 for privilege escalation through access control bypass, making it a critical concern for security compliance and risk management frameworks.