CVE-2026-2684 in Electronic Archives System
Summary
by MITRE • 02/19/2026
A vulnerability was determined in Tsinghua Unigroup Electronic Archives System up to 3.2.210802(62532). The impacted element is an unknown function of the file /Archive/ErecordManage/uploadFile.html. Executing a manipulation of the argument File can lead to unrestricted upload. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 03/03/2026
The vulnerability identified as CVE-2026-2684 affects the Tsinghua Unigroup Electronic Archives System version 3.2.210802(62532) and represents a critical security flaw in the file upload functionality. This issue resides within the /Archive/ErecordManage/uploadFile.html component where improper input validation allows attackers to bypass security controls and upload arbitrary files to the system. The vulnerability stems from the system's failure to adequately validate or sanitize the File argument parameter, creating an unrestricted file upload condition that can be exploited remotely without requiring authentication or physical access to the system infrastructure.
The technical nature of this flaw aligns with CWE-434 which specifically addresses unrestricted upload of file with dangerous type, making it a severe concern for organizations relying on electronic archive systems for sensitive data storage. The vulnerability's remote exploitability means that attackers can leverage this weakness from external networks without needing to establish a presence within the organization's internal infrastructure. The lack of vendor response despite early disclosure indicates potential security negligence or inadequate incident response procedures within the vendor's security operations, leaving organizations exposed to potential exploitation.
The operational impact of this vulnerability extends beyond simple unauthorized file uploads, as it provides attackers with a potential foothold for further compromise of the archive system. An attacker could upload malicious scripts or executables that could then be executed within the context of the web server, potentially leading to complete system compromise. The implications are particularly severe for an electronic archives system which typically handles sensitive and confidential information, as this vulnerability could result in data exfiltration, system infiltration, or disruption of archival services. The publicly disclosed exploit status significantly increases the risk exposure as threat actors can readily implement the attack without requiring advanced technical skills.
Organizations utilizing this system should immediately implement mitigations including but not limited to restricting file upload capabilities, implementing strict file type validation, and deploying web application firewalls to monitor and filter suspicious upload attempts. The system should be configured to reject executable file types and implement proper file extension validation combined with content type checking. Network segmentation and access control measures should be strengthened to limit potential lateral movement if exploitation occurs. Additionally, organizations should conduct immediate vulnerability scanning and penetration testing to identify any potential compromise of their systems, while monitoring for any anomalous file upload activities that might indicate exploitation attempts. The absence of vendor response underscores the importance of proactive security measures and alternative mitigation strategies for systems where vendor support is unavailable or unresponsive.