Is this vulnerability remotely exploitable from the internet?

It requires an authenticated Wallos user who can configure notification URLs. While it is not an unauthenticated, fully remote issue, it can often be exploited by any user with standard access if proper role restrictions are not in place.

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

The attacker needs valid credentials for a Wallos account with permission to save or modify notification webhook URLs. No direct shell access or administrative OS-level privileges on the server are required.

What is the safest general fix pattern for this issue?

The most robust approach is to centralize SSRF protection in a single validation routine and ensure all paths that accept or use URLs (test, save, update, import) call this routine. Complement this with a tight domain allowlist and, where feasible, network egress controls that prevent access to internal and metadata IP ranges.

Severity:

HIGH RISK

(7.7)

Server-Side Request Forgery (CWE-918) in Wallos Notification Webhooks

CVE-2026-33399

Published:

Mar 24, 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 server-initiated HTTP requests

Severity:

HIGH RISK

(7.7)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthorized access to internal network resources via server-initiated HTTP requests

Severity:

HIGH RISK

(7.7)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Server-Side Request Forgery (CWE-918) in Wallos Notification Webhooks

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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