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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-2026-5215 D-Link DNS-1550-04 network_mgr.cgi cgi_get_ipv6 access control — DNS-120 4.3 Medium 2026-03-31
CVE-2026-34733 AVideo: Unauthenticated File Deletion via PHP Operator Precedence Bug in CLI Guard — AVideo 6.5 Medium 2026-03-31
CVE-2026-34381 Admidio: Unauthenticated Access to Role-Restricted documents via neutralized .htaccess — admidio 7.5 High 2026-03-31
CVE-2026-33415 Discourse: Improper Access Control in discourse-ai Allows Unauthorized Category Content Exposure — discourse 2.7 - 2026-03-31
CVE-2026-5124 osrg GoBGP BGP Header bgp.go BGPHeader.DecodeFromBytes access control — GoBGP 3.7 Low 2026-03-30
CVE-2026-5122 osrg GoBGP BGP OPEN Message bgp.go DecodeFromBytes access control — GoBGP 3.7 Low 2026-03-30
CVE-2026-5107 FRRouting FRR EVPN Type-2 Route bgp_evpn.c process_type2_route access control — FRR 4.2 Medium 2026-03-30
CVE-2026-31950 LibreChat's IDOR in SSE Stream Subscription Allows Reading Other Users' Chats — LibreChat 5.3 Medium 2026-03-27
CVE-2026-33890 MyTube has an Unauthenticated Admin Privilege Escalation via Passkey Registration — MyTube 9.8 - 2026-03-27
CVE-2026-33726 Cilium L7 proxy may bypass Kubernetes NetworkPolicy for same-node traffic — cilium 5.4 Medium 2026-03-27
CVE-2026-0748 Access bypass in Drupal 7 i18n_node translation UI — Internationalization (i18n) - i18n_node submodule 4.3 - 2026-03-26
CVE-2025-55261 HCL Aftermarket DPC is affected by Missing Functional Level Access Control — Aftermarket DPC 8.1 High 2026-03-26
CVE-2026-33316 Vikunja’s Improper Access Control Enables Bypass of Administrator-Imposed Account Disablement — vikunja 8.1 High 2026-03-24
CVE-2026-33484 Langflow has Unauthenticated IDOR on Image Downloads — langflow 7.5 High 2026-03-24
CVE-2026-32299 Connect CMS: Information Disclosure Due to Improper Authorization through the Page Content Retrieval Feature — connect-cms 7.5 High 2026-03-23
CVE-2026-0898 An arbitrary file-write vulnerability in Pega Browser Extension (PBE) affects Pega Robot Studio developers who are automating Google Chrome and Microsoft Edge using either version 22.1 or R25. — Pega Robot Studio 8.1 - 2026-03-23
CVE-2026-4628 Keycloak: org.keycloak.authorization: keycloak: unauthorized resource modification due to improper access control — Red Hat Build of Keycloak 4.3 Medium 2026-03-23
CVE-2026-4514 PbootCMS Backend UserController.php access control — PbootCMS 6.3 Medium 2026-03-21
CVE-2026-32768 Chall-Manager's invalid NetworkPolicy enables a malicious actor to pivot into another namespace — chall-manager 9.1 - 2026-03-20
CVE-2026-33062 free5GC NRF Discovery EncodeGroupId Function Panics on Malformed group-id-list Parameter — nrf 7.5 - 2026-03-20
CVE-2026-32769 Fullchain's Invalid NetworkPolicy enables a malicious actor to pivot into another namespace — fullchain 7.3 - 2026-03-20
CVE-2026-32761 File Browser has an Authorization Policy Bypass in its Public Share Download Flow — filebrowser 6.5 Medium 2026-03-19
CVE-2026-32038 OpenClaw - Sandbox Network Isolation Bypass via docker.network=container Parameter — OpenClaw 9.8 Critical 2026-03-19
CVE-2026-33393 Discourse fixes loose hostname matching in spam host allowlist — discourse 4.3 Medium 2026-03-19
CVE-2026-32752 FreeScout: Broken Access Control in ThreadPolicy — Any User Can Read/Edit All Customer Messages — freescout - - 2026-03-19
CVE-2026-32737 Romeo's invalid NetworkPolicy enables a malicious actor to pivot into another namespace — romeo 9.8 - 2026-03-18
CVE-2025-41258 LibreChat RAG API Authentication Bypass — LibreChat 8.0 High 2026-03-18
CVE-2026-32254 Kube-router Proxy Module Blindly Trusts ExternalIPs/LoadBalancer IPs Enabling Cluster-Wide Traffic Hijacking and DNS DoS — kube-router 7.1 High 2026-03-18
CVE-2026-3111 Multiple vulnerabilities on the Educativa Campus — Campus 6.5AI Medium AI 2026-03-16
CVE-2026-3110 Multiple vulnerabilities on the Educativa Campus — Campus 5.3AI Medium AI 2026-03-16

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.