CVE-2026-50782 in Jinher
Summary
by MITRE • 07/30/2026
Jinher OA C6 contains an XML External Entity (XXE) injection vulnerability in the /c6/JHSoft.Web.HrmAttendance/sp_manager_getUserlist.aspx/GetXmlHttp endpoint. An unauthenticated remote attacker can send a crafted XML payload to read arbitrary files from the server via an out-of-band attack.
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Analysis
by VulDB Data Team • 07/30/2026
The Jinher OA C6 system presents a critical XML External Entity injection vulnerability within its /c6/JHSoft.Web.HrmAttendance/sp_manager_getUserlist.aspx/GetXmlHttp endpoint, representing a significant security weakness that exposes the platform to remote exploitation. This vulnerability falls under the CWE-611 category of XML External Entity Processing and aligns with ATT&CK technique T1213.002 for Data from Information Repositories, creating an attack surface where malicious actors can manipulate the system's XML processing capabilities to access sensitive data.
The technical flaw manifests through improper validation of XML input within the web application's handling mechanism for user list retrieval operations. When the system processes incoming XML payloads without adequate sanitization or restriction of external entity references, attackers can craft malicious XML documents that instruct the parser to resolve external entities. This allows unauthorized access to server resources through out-of-band data exfiltration techniques where sensitive files from the target system are retrieved and transmitted to attacker-controlled endpoints.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables attackers to potentially extract database credentials, configuration files, application source code, and other sensitive system artifacts. The unauthenticated nature of the attack means that any remote user can exploit this weakness without requiring prior login credentials or privileged access. This vulnerability directly maps to ATT&CK technique T1567.002 for Exfiltration Over Web Service, where attackers leverage legitimate web services to extract data from compromised systems.
Security controls within the affected system appear insufficient to prevent malicious XML processing, suggesting gaps in input validation and secure coding practices. The vulnerability demonstrates a failure in implementing proper XML parser configurations that would restrict external entity resolution or disable DTD processing entirely. Organizations should consider implementing comprehensive mitigations including input validation, secure XML parser settings, network segmentation, and monitoring for suspicious XML traffic patterns to prevent exploitation attempts.
Recommended remediation strategies include disabling external entity resolution in all XML parsers, implementing strict input validation for all XML payloads, deploying web application firewalls with XML inspection capabilities, and conducting regular security assessments of web services. The vulnerability also highlights the importance of following secure coding guidelines such as those outlined in OWASP Top 10 A04:2021 - Insecure Design, particularly concerning proper handling of external inputs and data validation mechanisms. Organizations should prioritize immediate patching or implementation of compensating controls to prevent potential exploitation attempts that could lead to complete system compromise and unauthorized access to sensitive organizational data.