How broadly exploitable is this vulnerability?

Exploitability depends on how exposed the database "test connection" feature is. If it is accessible to low-privilege users or, worse, anonymously due to misconfiguration, the vulnerability can be widely exploitable. When access is limited to authenticated admins, the risk is more constrained but still serious, particularly if admin accounts can be phished or compromised.

Does an attacker need local or authenticated access to exploit it?

Typically, the attacker needs network-level access to the Wgcloud backend and the ability to reach the connection test endpoint. Whether authentication is required depends on deployment and access control configuration; many real-world risks stem from overly permissive or shared admin accounts.

What is the safest general fix pattern?

The most robust fix is to redesign the feature so that it never accepts raw file paths from users. Instead, use internal identifiers or strictly predefined configuration options and resolve them to server-side paths within a locked-down directory, combined with path normalization and rejection of any traversal attempts.

Severity:

HIGH RISK

(7.5)

Arbitrary File Read via Path Traversal (CWE-22) in Wgcloud Database Connection Test

CVE-2026-30403

Published:

Mar 19, 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:

Path Traversal / Arbitrary File Read

CWE:

CWE-22

Impact:

Arbitrary File Read on Server Filesystem

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Path Traversal / Arbitrary File Read

CWE:

CWE-22

Impact:

Arbitrary File Read on Server Filesystem

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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Arbitrary File Read via Path Traversal (CWE-22) in Wgcloud Database Connection Test

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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