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CWE-284 (访问控制不恰当) — Vulnerability Class 2060

2060 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)
OtherVaries by Context
Mitigations (2)
Architecture and Design, OperationVery carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and DesignCompartmentalize 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 IDTitleCVSSSeverityPublished
CVE-2026-42205 Avo: Broken Access Control: Unauthorized Execution of Arbitrary Action Classes Across Resources — avo 8.8 High2026-05-08
CVE-2026-41487 Langfuse: Improper role-based-access control in Langfuse LLM connection management allowed users of role “member” to retrieve stored LLM provider API keys — langfuse--2026-05-08
CVE-2026-42278 UltraDAG: Smart Account Spending Policy Bypass via Pockets — core--2026-05-08
CVE-2026-41646 Nuclei: Local File Read via require() Module Loader Bypass — nuclei 5.5 Medium2026-05-08
CVE-2026-8127 eladmin Users API Endpoint UserController.java checkLevel access control — eladmin 6.3 Medium2026-05-08
CVE-2026-35435 Azure AI Foundry Elevation of Privilege Vulnerability — Azure AI Foundry 8.6 High2026-05-07
CVE-2026-33109 Azure Managed Instance for Apache Cassandra Remote Code Execution Vulnerability — Azure Managed Instance for Apache Cassandra 9.9 Critical2026-05-07
CVE-2026-5788 Ivanti EPMM多版本越权访问漏洞 — Endpoint Manager Mobile 7.0 High2026-05-07
CVE-2026-5786 Ivanti EPMM不当权限控制漏洞 — Endpoint Manager Mobile 8.8 High2026-05-07
CVE-2026-20167 Cisco IoT Field Network Director Remote Device Denial of Service Vulnerability — Cisco IoT Field Network Director (IoT-FND) 7.7 High2026-05-06
CVE-2026-7686 eyeo Adblock Plus Legacy Premium Activation premium.preload.js postMessage access control — Adblock Plus 5.3 Medium2026-05-03
CVE-2026-2311 IBM i is affected by a privilege escalation vulnerability in Web Administration GUI [] — i 6.4 Medium2026-04-30
CVE-2026-40603 Chartbrew: Incorrect Access Control in /api/project/dashboard/:brewName via same-team override — chartbrew 6.5 Medium2026-04-30
CVE-2026-40595 Chartbrew: Incorrect Access Control in public chart and export routes via missing onReport and SharePolicy checks — chartbrew 7.5 High2026-04-30
CVE-2026-40904 Chartbrew: Incorrect Access Control in dataset and dataRequest routes via team-scoped permission checks — chartbrew 8.1 High2026-04-30
CVE-2026-7468 1024-lab smart-admin Demo Site index.html access control — smart-admin 7.3 High2026-04-30
CVE-2026-5780 Multiple vulnerabilities in MphRx's Minerva — Minerva 4.3AIMediumAI2026-04-28
CVE-2026-5779 Multiple vulnerabilities in MphRx's Minerva — Minerva 8.1AIHighAI2026-04-28
CVE-2026-40966 VectorStoreChatMemoryAdvisor conversation scoping can lead to cross-tenant memory exfiltration — Spring AI 5.9 Medium2026-04-28
CVE-2026-33318 Actual has Privilege Escalation via 'change-password' Endpoint on OpenID-Migrated Servers — actual 8.8 High2026-04-24
CVE-2026-29197 Rocket.Chat 访问控制错误漏洞 — Rocket.Chat 4.3AIMediumAI2026-04-23
CVE-2026-24303 Microsoft Partner Center Elevation of Privilege Vulnerability — Microsoft Partner Center 9.6 Critical2026-04-23
CVE-2026-41277 Flowise: Mass Assignment in DocumentStore Create Endpoint Leads to Cross-Workspace Object Takeover (IDOR) — Flowise 8.8AIHighAI2026-04-23
CVE-2026-41270 Flowise: SSRF Protection Bypass via Unprotected Built-in HTTP Modules in Custom Function Sandbox — Flowise 7.1 High2026-04-23
CVE-2026-41243 OpenLearn's pending forum posts remain publicly readable by direct ID when moderation mode is enabled — OpenLearn 4.3AIMediumAI2026-04-23
CVE-2026-41166 OpenRemote has Improper Access Control via updateUserRealmRoles function — openremote 7.0 High2026-04-22
CVE-2026-40889 Frappe HR has Improper Access Control on Files — hrms 6.5 Medium2026-04-21
CVE-2026-40888 Frappe HR vulnerable to Improper Access Control — hrms 6.5AIMediumAI2026-04-21
CVE-2026-40874 mailcow: dockerized missing authorization on Forwarding Hosts delete action — mailcow-dockerized 5.4AIMediumAI2026-04-21
CVE-2026-40867 Horilla: Unauthorized Helpdesk Attachment Access via Attachment ID Manipulation — horilla 6.5AIMediumAI2026-04-21

Vulnerabilities classified as CWE-284 (访问控制不恰当) represent 2060 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.