Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CWE-639 (通过用户控制密钥绕过授权机制) — Vulnerability Class 2052

2052 vulnerabilities classified as CWE-639 (通过用户控制密钥绕过授权机制). AI Chinese analysis included.

CWE-639 represents an authorization bypass weakness where systems fail to validate that a user is permitted to access a resource identified by a user-controlled key. Attackers typically exploit this by manipulating identifiers, such as changing a numeric user ID in a URL or API parameter, to retrieve or modify another user’s private data. This insecure direct object reference allows unauthorized access without requiring authentication bypasses. Developers prevent this vulnerability by implementing robust server-side authorization checks that verify the requesting user’s permissions against the requested resource, rather than trusting client-supplied identifiers. Additionally, using indirect references or opaque tokens instead of predictable, sequential keys can mitigate the risk of enumeration and unauthorized access attempts.

MITRE CWE Description
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Retrieval of a user record occurs in the system based on some key value that is under user control. The key would typically identify a user-related record stored in the system and would be used to lookup that record for presentation to the user. It is likely that an attacker would have to be an authenticated user in the system. However, the authorization process would not properly check the data access operation to ensure that the authenticated user performing the operation has sufficient entitlements to perform the requested data access, hence bypassing any other authorization checks present in the system. For example, attackers can look at places where user specific data is retrieved (e.g. search screens) and determine whether the key for the item being looked up is controllable externally. The key may be a hidden field in the HTML form field, might be passed as a URL parameter or as an unencrypted cookie variable, then in each of these cases it will be possible to tamper with the key value. One manifestation of this weakness is when a system uses sequential or otherwise easily-guessable session IDs that would allow one user to easily switch to another user's session and read/modify their data.
Common Consequences (3)
Access Control Bypass Protection Mechanism
Access control checks for specific user data or functionality can be bypassed.
Access Control Gain Privileges or Assume Identity
Horizontal escalation of privilege is possible (one user can view/modify information of another user).
Access Control Gain Privileges or Assume Identity
Vertical escalation of privilege is possible if the user-controlled key is actually a flag that indicates administrator status, allowing the attacker to gain administrative access.
Mitigations (3)
Architecture and Design For each and every data access, ensure that the user has sufficient privilege to access the record that is being requested.
Architecture and Design, Implementation Make sure that the key that is used in the lookup of a specific user's record is not controllable externally by the user or that any tampering can be detected.
Architecture and Design Use encryption in order to make it more difficult to guess other legitimate values of the key or associate a digital signature with the key so that the server can verify that there has been no tampering.
Examples (1)
The following code uses a parameterized statement, which escapes metacharacters and prevents SQL injection vulnerabilities, to construct and execute a SQL query that searches for an invoice matching the specified identifier [1]. The identifier is selected from a list of all invoices associated with the current authenticated user.
... conn = new SqlConnection(_ConnectionString); conn.Open(); int16 id = System.Convert.ToInt16(invoiceID.Text); SqlCommand query = new SqlCommand( "SELECT * FROM invoices WHERE id = @id", conn); query.Parameters.AddWithValue("@id", id); SqlDataReader objReader = objCommand.ExecuteReader(); ...
Bad · C#
CVE ID Title CVSS Severity Published
CVE-2024-10780 Restaurant & Cafe Addon for Elementor <= 1.5.9 - Authenticated (Contributor+) Post Disclosure — Restaurant & Cafe Addon for Elementor 4.3 Medium 2024-11-28
CVE-2024-10670 Primary Addon for Elementor <= 1.6.2 - Authenticated (Contributor+) Post Disclosure — Primary Addon for Elementor 4.3 Medium 2024-11-28
CVE-2024-10798 Royal Elementor Addons and Templates <= 1.7.1003 - Authenticated (Contributor+) Post Disclosure — Royal Addons for Elementor – Addons and Templates Kit for Elementor 4.3 Medium 2024-11-28
CVE-2024-10868 Enter Addons – Ultimate Template Builder for Elementor <= 2.1.9 - Authenticated (Contributor+) Post Disclosure — Enter Addons – Ultimate Template Builder for Elementor 4.3 Medium 2024-11-23
CVE-2024-50395 Media Streaming add-on — Media Streaming add-on 7.8 - 2024-11-22
CVE-2024-10666 Easy Twitter Feed – Twitter feeds plugin for WP <= 1.2.6 - Authenticated (Contributor+) Post Exposure — Feeds for Twitter – Embed Social Media Posts with Live Updates 4.3 Medium 2024-11-22
CVE-2024-10671 Button Block – Get fully customizable & multi-functional buttons <= 1.1.4 - Authenticated (Contributor+) Post Disclosure — Button Block – Design Stylish, Interactive, and Multi-Functional Buttons 4.3 Medium 2024-11-21
CVE-2024-10782 Theme Builder For Elementor <= 1.2.2 - Authenticated (Contributor+) Post Disclosure — Theme Builder For Elementor 4.3 Medium 2024-11-21
CVE-2024-10796 If-So Dynamic Content Personalization <= 1.9.2.1 - Authenticated (Contributor+) Post Disclosure — If-So Dynamic Content Personalization 4.3 Medium 2024-11-21
CVE-2024-10696 UltraAddons – Elementor Addons (Header Footer Builder, Custom Font, Custom CSS,Woo Widget, Menu Builder, Anywhere Elementor Shortcode) <= 1.1.8 - Insecure Direct Object Reference to Sensitive Information Exposure via UA_Template Shortcode — UltraAddons for Elementor 4.3 Medium 2024-11-21
CVE-2024-10855 Image Optimizer, Resizer and CDN – Sirv <= 7.3.0 - Missing Authorization to Authenticated (Contributor+) Arbitrary Option Deletion — Image Optimizer, Resizer and CDN – Sirv 8.1 High 2024-11-20
CVE-2024-11318 IDOR vulnerability in AbsysNet — AbsysNet 7.5 High 2024-11-18
CVE-2024-10795 Popularis Extra <= 1.2.7 - Authenticated (Contributor+) Post Disclosure — Popularis Extra 4.3 Medium 2024-11-16
CVE-2024-52507 Share information of the Nextcloud Tables app is not limited to affected users — security-advisories 3.5 Low 2024-11-15
CVE-2024-52511 Nextcloud Tables has an Authorization Bypass Through User-Controlled Key in Tables — security-advisories 6.3 Medium 2024-11-15
CVE-2024-10174 WP Project Manager – Task, team, and project management plugin featuring kanban board and gantt charts <= 2.6.13 - Insecure Direct Object Reference to Unauthenticated Authorization Bypass — Project Manager – AI Powered Project Management, Task Management, Kanban Board & Time Tracker 7.3 High 2024-11-13
CVE-2024-10794 Boostify Header Footer Builder for Elementor <= 1.3.6 - Authenticated (Contributor+) Post Disclosure — Boostify Header Footer Builder for Elementor 4.3 Medium 2024-11-13
CVE-2024-10778 BuddyPress Builder for Elementor – BuddyBuilder <= 1.7.4 - Authenticated (Contributor+) Post Disclosure — BuddyPress Builder for Elementor – BuddyBuilder 4.3 Medium 2024-11-13
CVE-2023-47543 Fortinet FortiPortal 安全漏洞 — FortiPortal 5.1 Medium 2024-11-12
CVE-2024-10695 Futurio Extra <= 2.0.13 - Authenticated (Contributor+) Post Disclosure — Futurio Extra 4.3 Medium 2024-11-12
CVE-2024-10688 Attesa Extra <= 1.4.2 - Authenticated (Contributor+) Post Disclosure — Attesa Extra 4.3 Medium 2024-11-09
CVE-2024-10669 Countdown Timer block – Display the event's date into a timer. <= 1.2.4 - Authenticated (Contributor+) Post Disclosure — Countdown Timer Block – Animated Countdown for Events or Launches 4.3 Medium 2024-11-09
CVE-2024-10667 Content Slider Block – Create fully functional slider with Gutenberg block <= 3.1.5 - Authenticated (Contributor+) Post Disclosure — Content Slider Block – Slide Through Text or Media Content 4.3 Medium 2024-11-09
CVE-2024-10770 Envo Extra <= 1.9.3 - Authenticated (Contributor+) Post Disclosure — Envo Extra 4.3 Medium 2024-11-09
CVE-2024-10693 SKT Addons for Elementor <= 3.3 - Authenticated (Contributor+) Post Disclosure — SKT Addons for Elementor 4.3 Medium 2024-11-09
CVE-2024-10779 Cowidgets – Elementor Addons <= 1.2.0 - Authenticated (Contributor+) Post Disclosure — Cowidgets – Elementor Addons 5.3 Medium 2024-11-09
CVE-2024-9262 User Meta – User Profile Builder and User management plugin <= 3.1.1 - Insecure Direct Object Reference to Sensitive Information Exposure — User Meta – User Profile Builder and User management plugin 6.5 Medium 2024-11-09
CVE-2024-52313 data.all authenticated users can obtain incorrect object level authorizations — data.all 4.3 Medium 2024-11-09
CVE-2024-51559 Improper Access Control Vulnerability in Wave 2.0 — Wave 2.0 4.3AI Medium AI 2024-11-04
CVE-2024-37277 WordPress Paid Memberships Pro plugin <= 3.0.4 - Insecure Direct Object References (IDOR) vulnerability — Paid Memberships Pro 7.5 High 2024-11-01

Vulnerabilities classified as CWE-639 (通过用户控制密钥绕过授权机制) represent 2052 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.