Is this vulnerability remotely exploitable over the internet?

Yes, if Nginx UI is exposed over the network (e.g., to the internet or a wider internal audience), any remote user who can obtain an account on the system can exploit this issue by manipulating resource identifiers in requests.

Does an attacker need administrator or special privileges?

No. The vulnerability is exploitable by any authenticated user, regardless of role. A basic user account is sufficient to access, modify, or delete other users' resources due to missing ownership checks.

What is the safest general fix pattern?

The most robust fix is to add explicit ownership tracking (e.g., a `user_id` field) to all user-scoped models and enforce object-level authorization for every CRUD operation. Handlers should always confirm that the resource's owner matches the authenticated user, preferably using shared authorization utilities or policies rather than ad hoc checks.

Severity:

HIGH RISK

(8.8)

Broken Object-Level Authorization / IDOR (CWE-639) in Nginx UI Multi-User Resources

CVE-2026-33030

Published:

Mar 30, 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:

Broken Access Control / Insecure Direct Object Reference (IDOR)

CWE:

CWE-78;CWE-639

Impact:

Horizontal Privilege Escalation and Data Tampering

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Broken Access Control / Insecure Direct Object Reference (IDOR)

CWE:

CWE-78;CWE-639

Impact:

Horizontal Privilege Escalation and Data Tampering

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Broken Object-Level Authorization / IDOR (CWE-639) in Nginx UI Multi-User Resources

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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