Impact Analysis

Exploiting this vulnerability allows attackers to read sensitive files on the affected system, potentially exposing confidential information such as configuration files and credentials.

Since the attack can be initiated remotely without authentication, it poses a significant risk to the confidentiality of the system.

There are no known mitigations or countermeasures provided by the vendor, increasing the risk of exploitation.

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Compliance Impact

I don't know

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Executive Summary

CVE-2026-3719 is a remote path traversal vulnerability found in Tsinghua Unigroup Electronic Archives System version 3.2.210802 (build 62532).

The vulnerability exists in the /System/Cms/downLoad interface, where the path parameter can be manipulated by unauthenticated attackers to access arbitrary files on the underlying server.

This improper handling of the path argument allows attackers to bypass directory restrictions and read files outside the intended directory.

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Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by monitoring requests to the /System/Cms/downLoad interface for suspicious manipulation of the "path" parameter that attempts path traversal sequences such as "../" to access unauthorized files.'}, {'type': 'paragraph', 'content': 'Network detection can involve inspecting HTTP requests for unusual or malformed path parameters targeting the vulnerable endpoint.'}, {'type': 'paragraph', 'content': 'Since a proof-of-concept exploit is publicly available, security teams can use it in a controlled environment to verify if their system is vulnerable.'}, {'type': 'paragraph', 'content': 'Suggested commands for detection might include using tools like curl or wget to test the endpoint manually, for example:'}, {'type': 'list_item', 'content': 'curl -v "http://[target]/System/Cms/downLoad?path=../../../../etc/passwd"'}, {'type': 'list_item', 'content': 'tcpdump or Wireshark filters to capture HTTP traffic containing "/System/Cms/downLoad" and suspicious path parameters.'}] [1, 3]

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Mitigation Strategies

[{'type': 'paragraph', 'content': 'Immediate mitigation steps include restricting access to the /System/Cms/downLoad endpoint to trusted users or internal networks only.'}, {'type': 'paragraph', 'content': 'Implement input validation and sanitization on the "path" parameter to prevent path traversal sequences.'}, {'type': 'paragraph', 'content': 'If possible, apply any available patches or updates from the vendor; however, in this case, the vendor did not respond to the disclosure.'}, {'type': 'paragraph', 'content': 'Consider replacing the affected product with an alternative solution that does not have this vulnerability.'}, {'type': 'paragraph', 'content': 'Monitor logs for exploitation attempts and block suspicious IP addresses.'}] [3]

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