Is this vulnerability remotely exploitable?

It is remotely exploitable in the sense that an attacker can exploit it over the network through the web interface, but they must already possess valid Admin-level credentials. It does not allow an unauthenticated attacker to directly compromise the system.

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

The attacker needs an authenticated Admin account or equivalent access to the user management functionality. With that foothold, they can tamper with the `f_k_levels_list` parameter during user creation or modification to obtain SuperAdmin privileges.

What is the safest general fix pattern?

The most robust fix is to enforce strict, server-side authorization rules for role assignment. The server must determine which roles can be granted based on the authenticated user's permissions and ignore any client attempts to request higher roles. Only a tightly controlled mechanism should be able to create or modify SuperAdmin accounts.

Severity:

HIGH RISK

(7.2)

Insecure Authorization Check (CWE-639) in CouchCMS User Role Assignment

CVE-2026-29002

Published:

Apr 10, 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

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

Remote Code Execution on the Router

April 12, 2026

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Remote Code Execution on the Router

April 12, 2026

Vulnerability Type

Category:

Insecure Direct Object Reference / Broken Authorization

CWE:

CWE-639

Impact:

Privilege Escalation to SuperAdmin

Severity:

HIGH RISK

(7.2)

CVSS Version:

3.1

Vulnerability Type

Category:

Insecure Direct Object Reference / Broken Authorization

CWE:

CWE-639

Impact:

Privilege Escalation to SuperAdmin

Severity:

HIGH RISK

(7.2)

CVSS Version:

3.1

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Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Insecure Authorization Check (CWE-639) in CouchCMS User Role Assignment

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

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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