Is this vulnerability remotely exploitable?

Yes. The vulnerability exists in a web-accessible upload endpoint, so a remote attacker with network access to the application can attempt exploitation, subject to any authentication or network restrictions in place.

Does an attacker need authentication or special privileges?

That depends on how the Electronic Archives System is deployed. If the uploadFile.html endpoint is exposed to unauthenticated users or low-privileged roles, those users may be able to abuse it. Properly restricting upload capabilities to trusted, authenticated roles significantly reduces the attack surface.

What is the safest general fix pattern for this issue?

The most robust pattern is to implement strict, server-side file validation and storage controls: allowlist-only safe file types, perform content inspection, store files in non-executable locations, and ensure access controls are enforced before any upload logic runs. Combining these with secure server configuration (no script execution in upload directories) provides a defense-in-depth fix.

Severity:

HIGH RISK

(7.3)

Unrestricted File Upload (CWE-434) in Tsinghua Unigroup Electronic Archives System /Archive/ErecordManage/uploadFile.html

CVE-2026-2684

Published:

Feb 18, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Unrestricted File Upload

CWE:

CWE-284;CWE-434

Impact:

Remote Code Execution and Data Compromise (via arbitrary file upload)

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

Vulnerability Type

Category:

Unrestricted File Upload

CWE:

CWE-284;CWE-434

Impact:

Remote Code Execution and Data Compromise (via arbitrary file upload)

Severity:

HIGH RISK

(7.3)

CVSS Version:

3.1

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Unrestricted File Upload (CWE-434) in Tsinghua Unigroup Electronic Archives System /Archive/ErecordManage/uploadFile.html

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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