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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-2026-72531 Joomla! Core - [20260804] - Improper ACL checks for custom fields webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 — Joomla! CMS 5.1 Medium 2026-08-18
CVE-2026-73372 Joomla! Core - [20260809] - Improper ACL checks when injection schema.org contact data in Joomla 5.1.0-5.4.7 and 6.0.0-6.1.2 — Joomla! CMS 5.1 Medium 2026-08-18
CVE-2026-73371 Joomla! Core - [20260808] - Improper ACL checks for batch copy actions in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 — Joomla! CMS 5.1 Medium 2026-08-18
CVE-2026-72532 Joomla! Core - [20260805] - Improper ACL checks for category webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 — Joomla! CMS 5.1 Medium 2026-08-18
CVE-2026-71574 Joomla! Core - [20260803] - Inconsistent ACL checks for mutating webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 — Joomla! CMS 8.5 High 2026-08-18
CVE-2026-50138 goshs: WebDAV listener ignores --read-only, --upload-only, and --no-delete mode flags — goshs 8.1 High 2026-08-18
CVE-2026-73061 Scriban before 7.2.2 Arbitrary Property Write via TypedObjectAccessor — scriban 9.8 Critical 2026-08-16
CVE-2026-19918 SpaceX Starlink Router Gen 3 gRPC Management get_status access control — Starlink Router Gen 3 6.3 Medium 2026-08-15
CVE-2026-69414 Microsoft Defender Elevation of Privilege Vulnerability — Microsoft Malware Protection Engine 7.8 High 2026-08-14
CVE-2026-71570 Joomla Extension - icagenda.com - ACL bypass allowing arbitrary user enumeration < 2.0.0-4.0.11 — iCagenda extension for Joomla 5.1 Medium 2026-08-14
CVE-2026-19835 Webkul Bagisto Customer Item Deletion Endpoint access control — Bagisto 3.8 Low 2026-08-14
CVE-2026-72837 File Browser before 2.63.20 Privilege Escalation via Proxy Authentication — filebrowser 8.8 High 2026-08-14
CVE-2026-59763 Unbounded Arch package file metadata can cause resource amplification in Gitea package uploads — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-58508 Two SSRF vulnerabilities in Gitea migration/mirror (DNS rebinding + missing re-validation) — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-58507 Private Repository Existence Disclosure via go-get Meta Endpoint — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-58439 Branch Protection Bypass via PR Retargeting Preserves Stale `official` Approval Flag — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-58440 Webhooks created by a collaborator keep firing after their repo access is revoked → ongoing real-time exfiltration of private repo content (incomplete revocation cleanup in `DeleteCollaboration`) — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-58437 Repository Visibility Manipulation via Git Push Options — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-58429 Public-Only Personal access tokens scope bypass in Organization and Permission Endpoints — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-58417 REST API exposes organization membership of private organizations to public — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-58420 Local File Inclusion via file:// URI in Migration Restore — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-56750 Gitea Remember-Me Token Theft Not Invalidating Attacker Session — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-56755 Denial of Service (CPU & Memory Exhaustion) via O(N^2) String Concatenation in Debian Package Upload — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-56654 Privilege Escalation via Access Token Scope Escalation in API — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-56657 Gitea SSH Key Parser Denial of Service — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-55986 Email Management API Bypasses ManageCredentials Feature Restrictions — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-55984 Null Pointer Dereference in AddTime API Causes Authenticated Denial of Service — Gitea Open Source Git Server - - 2026-08-13
CVE-2026-73626 JupyterLab before 4.6.2 Authentication Bypass via PyPIExtensionManager — jupyterlab 7.5 High 2026-08-13
CVE-2026-59505 Priority - CWE-284: Improper Access Control — Portal Generator addon to Priority ERP (developed by Soft Solutions) 8.6 High 2026-08-13
CVE-2026-59501 Priority – CWE-284: Improper Access Control — Portal Generator addon to Priority ERP (developed by Soft Solutions) 8.2 High 2026-08-13

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.