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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-2026-48578 Secure Boot Security Feature Bypass Vulnerability — Windows 10 Version 1607 7.9 High 2026-06-09
CVE-2026-41092 Microsoft Kinect Elevation of Privilege Vulnerability — Windows 10 Version 1607 7.8 High 2026-06-09
CVE-2026-45649 Office for Android Spoofing Vulnerability — Microsoft Excel for Android 7.1 High 2026-06-09
CVE-2026-49938 Fortinet FortiPortal 访问控制错误漏洞 — FortiPortal 6.2 Medium 2026-06-09
CVE-2026-41985 Huawei HarmonyOS 访问控制错误漏洞 — HarmonyOS 5.1 Medium 2026-06-09
CVE-2026-41984 Huawei HarmonyOS 访问控制错误漏洞 — HarmonyOS 5.2 Medium 2026-06-09
CVE-2026-41006 Spring HATEOAS Collection+JSON/UBER deserializers do not honor Jackson configuration — Spring HATEOAS 7.5 High 2026-06-09
CVE-2026-41847 Spring Framework Security Filter Bypass in WebFlux Kotlin Router DSL — Spring Framework 4.8 Medium 2026-06-09
CVE-2026-11532 imvks786 student_management_system Student Record add.php access control — student_management_system 6.3 Medium 2026-06-08
CVE-2026-46441 Flowise: Mass Assignment in Assistant Update Endpoint Allows Cross-Workspace Resource Reassignment — Flowise - - 2026-06-08
CVE-2026-42863 Flowise: Mass Assignment in Chatflow Update Endpoint Allows Cross-Workspace AgentFlow Reassignment — Flowise - - 2026-06-08
CVE-2026-42862 Flowise: Mass Assignment in Tool Update Endpoint Allows Cross-Workspace Resource Reassignment — Flowise - - 2026-06-08
CVE-2026-42861 Flowise: Mass Assignment in Variable Update Endpoint Allows Cross-Workspace Resource Reassignment — Flowise - - 2026-06-08
CVE-2026-11466 zilliztech deep-searcher collection_router.py CollectionRouter.invoke access control — deep-searcher 5.4 Medium 2026-06-07
CVE-2026-45776 Open XDMoD has Broken Access Control via Client-Controlled Session Variable — xdmod - - 2026-06-05
CVE-2026-45746 Termix Vulnerable to Arbitrary Command Execution via Session Hijacking — Termix 9.0 Critical 2026-06-05
CVE-2026-48907 Joomla Extension - joomlacontenteditor.net - Remote Code Execution in JCE extension for Joomla < 2.9.99.5 — Joomla Content Editor (JCE) extension for Joomla - - 2026-06-05
CVE-2026-11326 OpenAI Atlas 安全漏洞 — OpenAI Atlas - - 2026-06-05
CVE-2024-27891 On affected platforms running Arista EOS with MACsec and egress ACLs configured on the same interfaces, the ACL policies may not be enforced for packets egressing on those ports. — EOS 5.3 Medium 2026-06-04
CVE-2026-5228 Improper Access Control in Kurt Software Studio's WriteUp Mobile App — WriteUp Mobile App 8.8 High 2026-06-04
CVE-2026-40715 Dell ThinOS 10 访问控制错误漏洞 — ThinOS 10 7.8 High 2026-06-02
CVE-2026-40713 Dell ThinOS 10 访问控制错误漏洞 — ThinOS 10 6.1 Medium 2026-06-02
CVE-2026-7198 CWE-284: Improper Access Control in web services in Progress Sitefinity — Sitefinity 9.8 Critical 2026-06-02
CVE-2026-3198 Improper Access Control in mlflow/mlflow — mlflow/mlflow - - 2026-06-02
CVE-2026-9614 Ivanti Neurons for ITSM 访问控制错误漏洞 — Neurons for ITSM (On-Premises) 8.8 High 2026-06-01
CVE-2026-10277 j3k0 mcp-google-workspace MCP Gmail Tool gmail.ts saveToDisk access control — mcp-google-workspace 6.3 Medium 2026-06-01
CVE-2026-45284 Nextcloud: Wrong condition in the User OIDC app's LdapService allowed deleted LDAP users to authenticate — security-advisories 4.6 Medium 2026-06-01
CVE-2026-45282 Nextcloud: Logged-in user bypasses share password and download restrictions on Text attachments via documentId leads to unauthorized file access — security-advisories 6.5 Medium 2026-06-01
CVE-2026-45266 Nextcloud: Unauthorized force-mute from missing permission check when using internal signaling — security-advisories 3.5 Low 2026-06-01
CVE-2026-45157 Nextcloud: Valid share tokens allow to access tempory upload files of share owner — security-advisories 6.3 Medium 2026-06-01

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.