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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-2026-90917 Joomla! Core - [20260907] - Core - Improper ACL checks in outputs for tagged items in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 — Joomla! CMS 6.9 Medium 2026-09-29
CVE-2026-90916 Joomla! Core - [20260906] - Core - Improper ACL checks in content history comparison view in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 — Joomla! CMS 5.1 Medium 2026-09-29
CVE-2026-90913 Joomla! Core - [20260903] - Core - Improper ACL checks for access level webservice endpoints in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 — Joomla! CMS 7.0 High 2026-09-29
CVE-2026-92370 Remote Session Access Control Bypass Leading to Remote Code Execution — Full Client 8.8 High 2026-09-29
CVE-2026-101144 Eleveo Call Recording Software Query Builder searchAction.do access control — Call Recording Software 6.3 Medium 2026-09-28
CVE-2026-101891 WatchGuard AP Improper Access Control in API Service Allows Unauthenticated Access — WatchGuard AP 9.3 Critical 2026-09-28
CVE-2026-101054 Thinkware U3000 TCP Service wpa_supplicant.conf get_file access control — U3000 5.3 Medium 2026-09-28
CVE-2026-101053 Thinkware U3000 TCP Service wpa_supplicant.conf PUT_FILE access control — U3000 7.3 High 2026-09-28
CVE-2026-100883 Krayin laravel-crm acl.php access control — laravel-crm 6.3 Medium 2026-09-27
CVE-2026-96281 Flatpak: flatpak: unprivileged active user can bypass anti-downgrade checks for system apps/runtimes — Red Hat Enterprise Linux 10 6.2 Medium 2026-09-27
CVE-2026-100621 capgo.app Content-Lock Bypass via r2-direct Bundle Mutation — capgo.app 4.3 Medium 2026-09-26
CVE-2026-85057 ZITADEL: Actions V1 sandbox escape: host file read via require() — zitadel 8.7 High 2026-09-24
CVE-2026-79758 Termix: Authenticated users can read other users' host status and clear global SSH connections — Termix 5.4 Medium 2026-09-24
CVE-2026-78313 Improper Access Control in DIAEnergie — DIAEnergie 6.5 Medium 2026-09-24
CVE-2026-96763 kvcache-ai mooncake MountSegment Request Processing segment.cpp access control — mooncake 5.4 Medium 2026-09-24
CVE-2026-82368 Brocade SANnav 3.0.1a前本地非授权访问漏洞 — SANnav 8.7 High 2026-09-23
CVE-2026-90904 Joomla Extension - joomshaper.com - Broken Access Control (ACL Bypass) in ApiController Record Editing in Easy Store extension 1.0.0-3.0.0 — Easy Store extension for Joomla 8.6 High 2026-09-23
CVE-2026-77252 MCP Atlassian: JIRA_PROJECTS_FILTER and CONFLUENCE_SPACES_FILTER can be bypassed in search tools — mcp-atlassian 6.5 Medium 2026-09-22
CVE-2026-95624 Tauri framework v2 malicious downgrade via allow_downgrades from frontend code — tauri-plugin-updater 6.8 Medium 2026-09-22
CVE-2026-83602 Netdata: Unauthenticated remote PUT to /api/v3/settings bypasses IP allowlist controls via HTTP_ACL_NOCHECK — netdata 6.5 Medium 2026-09-22
CVE-2026-76804 Nuclei: Local File Read via Workflow File-Protocol Gate Bypass — nuclei 5.5 Medium 2026-09-22
CVE-2026-76803 Nuclei: Local File Read via MySQL Client Sandbox Bypass — nuclei 5.3 Medium 2026-09-22
CVE-2026-91164 Warpgate: API tokens bypass the user's allowed_ip_ranges restriction — warpgate 4.3 Medium 2026-09-21
CVE-2026-77165 TYPE_TOKEN锁导致文件永久锁定无恢复路径 — Server - - 2026-09-21
CVE-2026-94036 D-Link DIR-X1860/DIR-X1860Z routerd ubus access control — DIR-X1860 8.8 High 2026-09-20
CVE-2026-11549 Multiple security vulnerabilities may affect IBM WebSphere Liberty that is shipped with IBM CICS TX Advanced. — CICS TX Advanced 6.5 Medium 2026-09-18
CVE-2026-58197 ToolHive: containerized MCP servers can reach host services via host.docker.internal, enabling lateral movement — toolhive 8.8 High 2026-09-18
CVE-2026-93676 Xdg-dbus-proxy: xdg-dbus-proxy: filtering for broadcast messages bypasses path/interface/member checks — Red Hat Enterprise Linux 10 3.2 Low 2026-09-18
CVE-2026-93604 vm2 3.11.8 Sandbox Escape via crypto.setFips — vm2 7.2 High 2026-09-18
CVE-2026-93504 SveltyCMS User Attribute Update Endpoint +server.ts access control — SveltyCMS 6.3 Medium 2026-09-18

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.