Is this vulnerability remotely exploitable?

Yes, it is remotely exploitable by anyone who can authenticate and reach the upload endpoint. The vulnerability does not require local system access, only network access to the web application and valid credentials with upload permissions.

Does an attacker need special privileges or roles?

The attack requires an authenticated account that has access to the file manager's upload functionality. If low-privileged or standard users have upload rights, the exposure is broader; if only administrators can upload, exploitation is limited to compromised or malicious admin accounts.

What is the safest general fix pattern?

The safest approach is to implement strict server-side allowlisting of file types, block all executable formats, and ensure uploaded content is stored outside of any directory where the web server executes scripts. Additionally, configure the web server to disallow script execution in upload paths and remove any reliance on client-controlled parameters like `type` for trust decisions.

Severity:

HIGH RISK

(8.8)

Arbitrary File Upload (CWE-434) in UniSharp Laravel File Manager

CVE-2019-25673

Published:

Apr 5, 2026

Status:

Received

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:

Arbitrary File Upload

CWE:

CWE-434

Impact:

Remote Code Execution via Uploaded File

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Arbitrary File Upload

CWE:

CWE-434

Impact:

Remote Code Execution via Uploaded File

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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Arbitrary File Upload (CWE-434) in UniSharp Laravel File Manager

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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