Is this vulnerability remotely exploitable over the internet?

Yes, but only by authenticated users of the LinkAce instance. An external attacker who gains or creates a valid account can supply crafted URLs that cause the server to make internal network requests.

What level of access does an attacker need to exploit this issue?

The attacker needs an authenticated account with the ability to submit or influence URLs that LinkAce will fetch server-side. No direct shell or network-level access to the server is required beyond application access.

What is the safest general fix pattern for this type of vulnerability?

The safest pattern is to combine strict outbound request control (e.g., domain allowlists or proxy enforcement) with robust URL validation that rejects any destination resolving to internal or non-routable address ranges, including those reached via hostnames and redirects.

Severity:

HIGH RISK

(8.5)

Server-Side Request Forgery (CWE-918) via Internal Hostnames in LinkAce

CVE-2026-33953

Published:

Mar 27, 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:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthorized access to internal network resources via SSRF

Severity:

HIGH RISK

(8.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthorized access to internal network resources via SSRF

Severity:

HIGH RISK

(8.5)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Server-Side Request Forgery (CWE-918) via Internal Hostnames in LinkAce

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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