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CWE-284 (访问控制不恰当) — Vulnerability Class 2612

2612 vulnerabilities classified as CWE-284 (访问控制不恰当). AI Chinese analysis included.

CWE-284 represents a critical security weakness where software fails to properly restrict access to sensitive resources, allowing unauthorized actors to interact with data or functions they should not reach. This flaw typically arises when developers neglect to implement robust authentication or authorization checks, enabling attackers to bypass security controls through direct URL manipulation, token forgery, or privilege escalation techniques. Exploitation often leads to severe consequences, including data breaches, unauthorized system modifications, or complete service disruption. To mitigate this risk, developers must enforce strict access control policies at every layer of the application architecture. This involves implementing comprehensive identity verification, applying the principle of least privilege, and rigorously validating user permissions before granting access to any protected resource, ensuring that only authenticated and authorized users can perform specific actions.

MITRE CWE Description
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Access control involves the use of several protection mechanisms such as: Authentication (proving the identity of an actor) Authorization (ensuring that a given actor can access a resource), and Accountability (tracking of activities that were performed) When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: Specification: incorrect privileges, permissions, ownership, etc. are explicitly specified for either the user or the resource (for example, setting a password file to be world-writable, or giving administrator capabilities to a guest user). This action could be performed by the program or the administrator. Enforcement: the mechanism contains errors that prevent it from properly enforcing the specified access control requirements (e.g., allowing the user to specify their own privileges, or allowing a syntactically-incorrect ACL to produce insecure settings). This problem occurs within the program itself, in that it does not actually enforce the intended security policy that the administrator specifies.
Common Consequences (1)
Other Varies by Context
Mitigations (2)
Architecture and Design, Operation Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separatio…
Examples (2)
This code temporarily raises the program's privileges to allow creation of a new user folder.
def makeNewUserDir(username): if invalidUsername(username): #avoid CWE-22 and CWE-78 print('Usernames cannot contain invalid characters') return False try: raisePrivileges() os.mkdir('/home/' + username) lowerPrivileges() except OSError: print('Unable to create new user directory for user:' + username) return False return True
Bad · Python
This function runs an arbitrary SQL query on a given database, returning the result of the query.
function runEmployeeQuery($dbName, $name){ mysql_select_db($dbName,$globalDbHandle) or die("Could not open Database".$dbName); //Use a prepared statement to avoid CWE-89 $preparedStatement = $globalDbHandle->prepare('SELECT * FROM employees WHERE name = :name'); $preparedStatement->execute(array(':name' => $name)); return $preparedStatement->fetchAll(); } /.../ $employeeRecord = runEmployeeQuery('EmployeeDB',$_GET['EmployeeName']);
Bad · PHP
CVE ID Title CVSS Severity Published
CVE-2026-88864 Capgo SSO Provider Authentication Bypass via PostgREST Direct Write — capgo.app 9.1 Critical 2026-09-10
CVE-2026-78084 Joomla Extension - joomshaper.com - Missing Access Control in Gallery Image Management in SP Property < 4.1.4 — SP Property extension for Joomla 6.9 Medium 2026-09-10
CVE-2026-50165 alf.io has Improper Access Control for Organization Owners that Exposes System Secrets — alf.io 7.1 High 2026-09-09
CVE-2026-86774 Snipe-IT before 8.7.0 Broken Access Control via AssetModelPolicy — snipe-it 6.3 Medium 2026-09-09
CVE-2026-19625 IBM Enterprise Build of Quarkus is affected by multiple vulnerabilities — Enterprise Build of Quarkus 5.3 Medium 2026-09-08
CVE-2026-75998 ColdFusion | Improper Access Control (CWE-284) — ColdFusion 2025 7.5 High 2026-09-08
CVE-2026-77487 SQL Server Elevation of Privilege Vulnerability — Microsoft SQL Server 2017 (CU 31) 8.8 High 2026-09-08
CVE-2026-73028 SQL Server Elevation of Privilege Vulnerability — Microsoft SQL Server 2017 (CU 31) 8.8 High 2026-09-08
CVE-2026-69273 Microsoft Office SharePoint Remote Code Execution Vulnerability — Microsoft SharePoint Server Subscription Edition 8.8 High 2026-09-08
CVE-2026-69282 Microsoft Office SharePoint Remote Code Execution Vulnerability — Microsoft SharePoint Server Subscription Edition 8.8 High 2026-09-08
CVE-2026-69268 Microsoft Office SharePoint Remote Code Execution Vulnerability — Microsoft SharePoint Server Subscription Edition 8.8 High 2026-09-08
CVE-2026-22575 Fortinet FortiManager 权限许可和访问控制问题漏洞 — FortiManager 4.7 Medium 2026-09-08
CVE-2026-26084 Fortinet FortiSandbox 权限许可和访问控制问题漏洞 — FortiSandbox PaaS 8.9 Critical 2026-09-08
CVE-2026-84385 Fortinet FortiSOAR 权限许可和访问控制问题漏洞 — FortiSOAR on-premise 4.9 Medium 2026-09-08
CVE-2026-86512 java-json-tools json-patch Copy Move Operations CopyOperation.java MoveOperation.apply access control — json-patch 6.3 Medium 2026-09-08
CVE-2026-86285 BookStack Attachment Edit Endpoint AttachmentController.php getUpdateForm access control — BookStack 4.3 Medium 2026-09-07
CVE-2026-86228 JeecgBoot AiragModelController.java exportXls access control — JeecgBoot 4.3 Medium 2026-09-06
CVE-2026-19274 IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image — Observability with Instana (Agent) 9.6 Critical 2026-09-04
CVE-2026-9186 Langflow is vulnerable to stored cross-site scripting and IP spoofing due to unsanitized Markdown rendering and untrusted proxy header trust — Langflow OSS 6.5 Medium 2026-09-04
CVE-2026-85401 Dolibarr Legacy File Manager config.inc.php access control — Dolibarr 6.3 Medium 2026-09-04
CVE-2026-85147 Lightstar|SmartIT Desktop Manager - Use of Hard-coded Credentials — SmartIT Desktop Manager 7.5 High 2026-09-04
CVE-2026-53924 Gardens v2: Permissionless syncOutflow bypasses streaming proposal disputes — gardens-v2 8.7 High 2026-09-03
CVE-2026-20279 Cisco IOS XR Software Security Hardening Release: September 2026 — Cisco IOS XR Software 9.8 Critical 2026-09-02
CVE-2026-84804 Kimai before 2.65.0 Authorization Bypass via Team Activity API — kimai 5.4 Medium 2026-09-02
CVE-2026-84200 Kyverno before v1.13.0 Policy Bypass via Multiple Exceptions — kyverno 9.0 Critical 2026-09-01
CVE-2026-84187 AVideo on_publish.php Missing Authentication Check via RTMP Callback — AVideo 8.2 High 2026-09-01
CVE-2026-84165 Lack of authorisation in OpenNebula by OpenNebula Systems — OpenNebula 8.7 High 2026-09-01
CVE-2026-82745 ETS and Mnesia data layers overwrite an existing record on create instead of enforcing primary-key uniqueness — ash 5.9 Medium 2026-09-01
CVE-2026-82835 caoqianming django-vue-admin file access control — django-vue-admin 5.4 Medium 2026-08-31
CVE-2026-82834 Doccano Open Source Annotation Tools for Machine Learning Practitioners Bulk-Delete Endpoint category-types LabelList access control — Open Source Annotation Tools for Machine Learning Practitioners 5.4 Medium 2026-08-31

Vulnerabilities classified as CWE-284 (访问控制不恰当) represent 2612 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.