CVE-2026-4564 in RuoYi
Summary
by MITRE • 03/23/2026
A security vulnerability has been detected in yangzongzhuan RuoYi up to 4.8.2. This issue affects some unknown processing of the file /monitor/job/ of the component Quartz Job Handler. Such manipulation of the argument invokeTarget leads to code injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 06/05/2026
This vulnerability exists in the yangzongzhuan RuoYi framework version 4.8.2 and earlier, specifically within the Quartz Job Handler component that processes requests to the /monitor/job/ endpoint. The flaw stems from insufficient input validation and sanitization of the invokeTarget parameter, which allows attackers to manipulate the argument processing logic in a way that enables arbitrary code execution. The vulnerability represents a critical security risk as it permits remote code injection attacks through the web interface, eliminating the need for local system access or authentication credentials. The issue directly relates to CWE-94, which describes improper control of generation of code, and specifically manifests as a code injection vulnerability in the job scheduling component. This represents a serious threat to the integrity and confidentiality of systems running affected versions of the framework.
The technical exploitation of this vulnerability occurs when an attacker submits malicious input through the invokeTarget parameter in the Quartz Job Handler. The system fails to properly validate or sanitize this parameter before using it in code execution contexts, allowing attackers to inject and execute arbitrary commands on the server. The remote nature of the attack means that exploitation can occur from any location without requiring physical access to the system, making it particularly dangerous for web-facing applications. The attack vector leverages the legitimate job scheduling functionality of the framework, making it difficult to detect through traditional security monitoring approaches. This vulnerability aligns with ATT&CK technique T1059.007, which covers 'Command and Scripting Interpreter: PowerShell,' and T1566.001, 'Phishing: Spearphishing Attachment,' as attackers can leverage the framework's legitimate functionality to execute malicious payloads.
The operational impact of this vulnerability extends beyond immediate code execution capabilities to encompass complete system compromise and potential data breaches. Attackers can leverage this vulnerability to establish persistent backdoors, escalate privileges, and access sensitive data stored within the application or connected systems. The affected RuoYi framework is commonly used in enterprise environments for building management and administrative interfaces, making the potential impact substantial for organizations that have not patched this vulnerability. The lack of vendor response to early disclosure attempts creates a particularly concerning scenario where organizations must rely on public exploits without official patches or mitigation guidance. This vulnerability can lead to complete system takeover, data exfiltration, and disruption of business operations, particularly in environments where the framework controls critical administrative functions.
Organizations should immediately implement multiple layers of defense to protect against this vulnerability. The primary mitigation strategy involves applying the latest security patches from the vendor, though the lack of vendor response necessitates immediate alternative actions. Network segmentation and firewall rules should be implemented to restrict access to the affected endpoints, particularly the /monitor/job/ path. Input validation and sanitization measures should be strengthened throughout the application to prevent parameter manipulation, including implementing strict validation of all job scheduling parameters. Web application firewalls should be configured to detect and block suspicious patterns in request parameters that might indicate exploitation attempts. Additionally, organizations should conduct comprehensive security assessments of their RuoYi implementations to identify any other potential attack vectors within the framework. Monitoring and logging should be enhanced to detect unusual job scheduling activities or unauthorized access attempts to the monitoring endpoints. Regular security audits and penetration testing should be performed to ensure that the implemented mitigations remain effective against evolving attack techniques.