CVE-2026-19367 in LudusMCP
Summary
by MITRE • 08/09/2026
A vulnerability has been found in NocteDefensor LudusMCP 1.0.24. Affected by this vulnerability is an unknown functionality of the file src/tools/rangeConfig.ts of the component read_range_config. The manipulation of the argument Source leads to server-side request forgery. The attack may be initiated remotely. The project was informed of the problem early through an issue report but has not responded yet.
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Analysis
by VulDB Data Team • 08/10/2026
This vulnerability resides within the NocteDefensor LudusMCP 1.0.24 software system where a server-side request forgery flaw has been identified in the read_range_config functionality. The specific component affected is located in src/tools/rangeConfig.ts and demonstrates a critical security weakness that allows remote attackers to manipulate the Source argument parameter. The vulnerability represents a classic srf attack vector where malicious input can cause the application to make unintended requests to arbitrary destinations, potentially enabling attackers to bypass network restrictions or access internal systems.
The technical exploitation of this flaw occurs through manipulation of the Source argument within the read_range_config function, which processes configuration data for range parameters. When an attacker provides crafted input to this parameter, the system fails to properly validate or sanitize the input before using it in network requests, creating a pathway for unauthorized server-side communications. This type of vulnerability falls under CWE-918, which specifically addresses server-side request forgery vulnerabilities where applications fail to properly validate user-supplied URLs or hostnames. The attack can be initiated remotely without requiring local system access, making it particularly dangerous as it can be exploited from any network location with access to the vulnerable application.
The operational impact of this vulnerability extends beyond simple data exfiltration or unauthorized access. An attacker could potentially leverage this flaw to perform reconnaissance on internal network resources that would normally be protected by firewalls or other network security controls. The vulnerability creates a potential pivot point for further attacks within the network infrastructure, as servers may be configured to trust requests originating from the application itself, creating a dangerous chain reaction of privilege escalation and lateral movement opportunities.
Security professionals should consider this vulnerability in relation to ATT&CK technique T1071.004 which covers application layer protocol: DNS, and T1566 which addresses credential harvesting through social engineering. The lack of response from the project maintainers regarding the reported issue represents a significant gap in responsible disclosure practices and creates additional risk for users who may continue to operate vulnerable systems without mitigation. Organizations should implement immediate network monitoring to detect unusual outbound requests that could indicate exploitation attempts, while also preparing emergency patches or workarounds based on the specific input validation requirements of their configuration management processes.
The vulnerability demonstrates poor input validation practices in the application's configuration handling system, where user-provided parameters are directly used in network operations without proper sanitization or verification. This represents a fundamental security architecture flaw that should be addressed through comprehensive parameter validation, including hostname and URL validation, implementing allowlists for acceptable destinations, and potentially utilizing sandboxed execution environments for configuration processing tasks. The absence of response to the issue report indicates potential security mismanagement within the project's development lifecycle and underscores the importance of maintaining active vulnerability disclosure channels for all software components that handle external input processing.