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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-2026-76281 Improper Access Control in Splunk Enterprise — Splunk Enterprise - - 2026-10-07
CVE-2026-76265 Improper Access Control through REST API Endpoints in Splunk Secure Gateway — Splunk Enterprise 6.5 Medium 2026-10-07
CVE-2026-76463 Cisco Meraki Security Hardening Release: October 2026 - Improper Access Control Vulnerabilities — Cisco Campus Gateway Software 8.8 High 2026-10-07
CVE-2026-76498 Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Access Control Vulnerabilities — Cisco Application Policy Infrastructure Controller (APIC) 9.8 Critical 2026-10-07
CVE-2026-76455 Cisco NX-OS Software Security Hardening Release: October 2026 - Improper Access Control Vulnerabilities — Cisco NX-OS Software 9.8 Critical 2026-10-07
CVE-2026-20038 Cisco Nexus 9000 Series Fabric Switches in ACI Mode Policy-Based Redirect Endpoint Group Contract Bypass Vulnerability — Cisco NX-OS System Software in ACI Mode 5.8 Medium 2026-10-07
CVE-2026-106580 ImageMagick: Policy Bypass in CUT encoder — ImageMagick 4.0 Medium 2026-10-07
CVE-2026-107175 MISP Correlation Engine Fails to Refresh When Event Distribution or Sharing Group Changes — MISP 5.3 Medium 2026-10-07
CVE-2026-102781 Joomla Extension - ordasoft.com - Unauthenticated Destructive CRUD in OrdaSoft Touch Slider < 5.4.6 — Touch Slider extension for Joomla 6.9 Medium 2026-10-07
CVE-2026-97680 Langflow OSS is affected by multiple vulnerabilities — Langflow OSS 8.3 High 2026-10-06
CVE-2026-101329 Langflow OSS is affected by multiple vulnerabilities — Langflow OSS 6.5 Medium 2026-10-06
CVE-2026-104335 Langflow OSS is affected by multiple vulnerabilities — Langflow OSS 8.8 High 2026-10-06
CVE-2026-106513 MISP: Site-Admin Can Repoint Redis Workers to Attacker-Controlled Server via UI/API Configuration Change — MISP 6.9 Medium 2026-10-06
CVE-2026-86362 Dell System Update <2.3.0.0权限提升漏洞 — System Update 8.2 High 2026-10-06
CVE-2026-105855 Payload: Field-level password update restrictions were not enforced — payload 7.6 High 2026-10-06
CVE-2026-105851 Payload: Field access control bypass on auth collections — payload 9.3 Critical 2026-10-06
CVE-2026-105692 Penpot: IDOR in Share-Link Deletion Allows Any File Editor to Delete Share-Links They Did Not Create — penpot 5.4 Medium 2026-10-05
CVE-2026-103085 WordPress WP User Manager plugin <= 2.9.20 - Privilege Escalation vulnerability — WP User Manager 6.5 Medium 2026-10-05
CVE-2026-105632 Plane: Broken Access Control - joinProject GraphQL mutation allows self-join into private (secret) projects — plane 8.7 High 2026-10-05
CVE-2026-104974 Plane: Disabled User Auto-Reactivation on Login — plane 8.1 High 2026-10-05
CVE-2026-102795 Apache Traffic Server: SNI to Host header matching policy is not properly enforced — Apache Traffic Server 9.3 Critical 2026-10-02
CVE-2026-63045 Apache HTTP Server: mod_proxy_ftp PASV address handling — Apache HTTP Server - - 2026-10-01
CVE-2026-76142 Genians, Inc. Genian NAC/ZTNA Improper Access Control on the Internal Interface — Genian NAC 5.0.75 LTS Release 9.3 Critical 2026-10-01
CVE-2026-103534 David-Crty databasement Snapshot Model snapshots SnapshotPolicy.view access control — databasement 6.3 Medium 2026-10-01
CVE-2026-102132 Kiteworks Core Privilege Escalation through Improper Access Control — Core 7.2 High 2026-09-30
CVE-2026-55494 Tugtainer: Unauthenticated access to Tugtainer Agent Docker management APIs when AGENT_SECRET is unset — tugtainer 9.8 Critical 2026-09-30
CVE-2026-55181 Tugtainer: OIDC login remains accessible when OIDC_ENABLED is false — tugtainer 9.4 Critical 2026-09-30
CVE-2026-103239 MISP Tag Collection Save Allows Privilege Escalation via Sibling Model Injection — MISP 8.6 High 2026-09-30
CVE-2026-92226 Joomla! Core - [20260913] - Core - Improper ACL checks for varous webservice edit tasks in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 — Joomla! CMS 7.0 High 2026-09-29
CVE-2026-92223 Joomla! Core - [20260910] - Core - Improper ACL checks for workflow stage changes in Joomla 5.0.0-5.4.8, 6.0.0-6.1.3 — Joomla! CMS 5.1 Medium 2026-09-29

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.