How broadly exploitable is this vulnerability?

The issue can be exploited by any party that can reach the `/member/orderList` endpoint and is able to manipulate the `userId` parameter. If the endpoint requires login but does not tie `userId` to the logged-in account, then any valid user could potentially access other users' orders.

Does an attacker need special privileges or administrative access?

Typically no. In many IDOR-style flaws, a standard user account (or even an unauthenticated user, depending on deployment) is sufficient, as the weakness lies in missing or weak authorization checks rather than missing authentication.

What is the safest general fix pattern for developers?

The most robust fix is to stop trusting client-supplied identifiers for resource ownership. Always derive the user identity on the server side from the authenticated context and ensure that queries for user-owned resources (like orders) are based solely on that identity, with explicit checks that the requester is allowed to see each returned record.

Severity:

HIGH RISK

(8.2)

Insecure Direct Object Reference (CWE-639) in xmall /member/orderList API

CVE-2023-36331

Published:

Jan 12, 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-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Insecure Direct Object Reference

CWE:

CWE-639

Impact:

Unauthorized Access to Sensitive Order Data

Severity:

HIGH RISK

(8.2)

CVSS Version:

3.1

Vulnerability Type

Category:

Insecure Direct Object Reference

CWE:

CWE-639

Impact:

Unauthorized Access to Sensitive Order Data

Severity:

HIGH RISK

(8.2)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Insecure Direct Object Reference (CWE-639) in xmall /member/orderList API

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)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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