CyberSecBulletin

Improper Access Control

CWE-284

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

We track 3,726 vulnerabilities of this type. 100% are rated high or critical, and the average CVSS score is 8.3. 36 have been exploited in real attacks.

How this weakness is prevented

  • 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 separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

Latest Improper Access Control vulnerabilities

  • 9.9 Critical severity

    UniFi OS Server: Improper Access Control

    CVE-2026-77534Ubiquiti

    A malicious actor with access to the network and low privileges could exploit an Improper Access Control vulnerability found in certain devices running UniFi OS to escalate privileges within such UniFi OS devices or instances.

  • 9.1 Critical severity

    NSD: Improper Access Control

    CVE-2026-18664NLnet Labs

    When ranges are used for access control (i.e. of the form 1.2.3.4-1.2.3.25), because NSD wrongly compares the IP address with the range on little endian systems, IPs that were meant to be allowed may be denied, and, IPs that were meant to be denied access coul

  • 8.8 High severity

    Admin By Request (ABR): Improper Access Control

    CVE-2026-78236Admin By Request (ABR)

    An insecure PIN derivation mechanism in ABR allows a low-privileged user to escalate privileges to administrator by communicating over Cross-Process Communication (XPC) while masquerading as an Apple-signed process.

  • 9.1 Critical severity

    Apache Tomcat: Improper Access Control

    CVE-2026-65182Apache

    Improper Access Control, Incorrect Authorization vulnerability in Apache Tomcat leads to security constraint bypass if a constraint for a longer path is specified before a more restrictive constraint for a shorter sub-path. This issue affects Apache Tomcat: fr

  • 9.1 Critical severity

    PraisonAI: Improper Access Control

    CVE-2026-55536MervinPraison

    PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, Browser Server _handle_connection() checks Chrome extension origins with re.match() and the unanchored expression chrome-extension://[a-z0-9]{32}. Extra trailing characters pass before websock

  • 7.8 High severity

    ThinOS 10: Improper Access Control

    CVE-2026-61419Dell

    Dell ThinOS 10, versions prior to 2605_10.2518, contain an Improper Access Control vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Unauthorized access.

  • 7.3 High severity

    Online Pharmacy System: Improper Access Control

    CVE-2026-78245itsourcecode

    A flaw has been found in itsourcecode Online Pharmacy System 1.0. This affects the function move_uploaded_file of the file all_users/register.php of the component User Registration. Executing a manipulation of the argument photo can lead to unrestricted upload

  • 7.3 High severity

    Payroll System: Improper Access Control

    CVE-2026-78202itsourcecode

    A vulnerability was found in itsourcecode Payroll System 1.0. This affects the function save_settings of the file admin_class.php. The manipulation of the argument img results in unrestricted upload. The attack may be performed from remote. The exploit has bee

  • 8.7 High severity

    Fabrik extension for Joomla: Improper Access Control

    CVE-2026-76599Fabrikar.com

    Joomla Extension - fabrikar.com - Unauthenticated database table list and table-prefix disclosure in Fabrik < 4.7.2 - The ajax_tables method of the elements model allows listings of arbitrary database tables including columns.

  • 8.7 High severity

    Fabrik extension for Joomla: Improper Limitation of a Pathname to a Restricted Directory

    CVE-2026-76598Fabrikar.com

    Joomla Extension - fabrikar.com - Unauthenticated arbitrary directory listing via onAjax_getFolders in Fabrik < 4.7.2 - The onAjax_getFolders method of the elements model allows arbitrary directory listings.

  • 8.7 High severity

    Fabrik extension for Joomla: Improper Access Control

    CVE-2026-76597Fabrikar.com

    Joomla Extension - fabrikar.com - Unauthenticated arbitrary file upload to web root via list email plugin in Fabrik < 4.7.2 - The list email plugin controller allows to upload non-executable files to the webroot.

  • 8.7 High severity

    Fabrik extension for Joomla: Improper Access Control

    CVE-2026-76596Fabrikar.com

    Joomla Extension - fabrikar.com - Unauthenticated table truncation via list.doempty in Fabrik < 4.7.2- The list controllers doemtpy endpoints lacks ACL gates, a plain GET empties the target list's table

  • 7.7 High severity

    incus: Improper Access Control

    CVE-2026-55622Lxc

    Incus is a system container and virtual machine manager. Prior to version 7.2.0, missing authorization checks exist for instance copying where an attacker knowing the name of a project that they don't have access to and the name of an instance in that project

  • 7.7 High severity

    incus: Improper Access Control

    CVE-2026-55621Lxc

    Incus is a system container and virtual machine manager. Prior to version 7.2.0, missing authorization checks exist for custom volume copying where an attacker knowing the name of a project that they don't have access to and the name of a custom volume in that

  • 9.1 Critical severity

    Apache CloudStack: Improper Access Control

    CVE-2026-62440Apache

    Improper Access Control vulnerability in Apache CloudStack's Kubernetes Service (CKS) plugin, allowing cross-tenant manipulation of the Kubernetes cluster while adding and removing nodes. This issue affects Apache CloudStack: from 4.21.0.0 through 4.22.1.0. Us

  • 7.2 High severity

    Dokan: AI Powered WooCommerce Multivendor…: Improper Access Control

    The Dokan: AI Powered WooCommerce Multivendor Marketplace Solution WordPress plugin before 5.0.14 does not correctly check user capabilities on some of its admin REST API routes, checking only for a WooCommerce management capability instead of the Dokan: AI Po

  • 8.8 High severity

    Splunk Enterprise: Improper Access Control

    CVE-2026-76313Splunk

    In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, a user who does not hold the "admin" or "power" Splunk roles could perform Remote Code Execution (RCE) by uploading a malicious knowledge bundle and causing it to be used by distributed se

  • 9.4 Critical severity

    Splunk Enterprise: Improper Access Control

    CVE-2026-76312Splunk

    In Splunk Enterprise versions below 10.4.1, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user who can read the Hypertext Markup Language (HTML) source of a page that embeds a Splunk report could use exposed session material to access all relevant data and af

  • 9.4 Critical severity

    Splunk Enterprise: Improper Access Control

    CVE-2026-76311Splunk

    In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user who has an embedded report token could download the dispatch archive for an embedded report search job and use exposed session material to access all relevant data

  • 9.4 Critical severity

    Splunk Enterprise: Improper Access Control

    CVE-2026-76310Splunk

    In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user who has an embedded report token could download the associated search job dispatch archive, recover session material, and use it to access all relevant data availab

  • 10.0 Critical severity

    Cisco Secure Workload: Improper Access Control

    CVE-2026-20315Cisco

    As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple int

  • 9.8 Critical severity

    TrueBooker: Improper Access Control

    CVE-2026-18776TrueBooker

    The TrueBooker WordPress plugin before 1.2.7 does not have proper authorisation checks in some of its AJAX actions, allowing unauthenticated users to change the email address of arbitrary users, including administrators, and subsequently take over their accoun

  • 7.2 High severity

    Eventin: Improper Access Control

    CVE-2026-13174Eventin

    The Eventin WordPress plugin before 4.1.21 does not verify ownership or capability before deleting user accounts, allowing users with contributor-level access and above to permanently delete other users' accounts.

  • 8.6 High severity

    Helidon: Improper Access Control

    CVE-2026-73939Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.19. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to comprom

  • 7.5 High severity

    Helidon: Improper Access Control

    CVE-2026-73938Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromi

  • 8.2 High severity

    Helidon: Improper Access Control

    CVE-2026-73937Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compro

  • 7.5 High severity

    Helidon: Improper Access Control

    CVE-2026-73936Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromi

  • 7.5 High severity

    Helidon: Improper Access Control

    CVE-2026-73935Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compro

  • 7.5 High severity

    Helidon: Improper Access Control

    CVE-2026-73934Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.18. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compr

  • 7.3 High severity

    Helidon: Improper Access Control

    CVE-2026-73933Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.5.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromi

  • 8.3 High severity

    Helidon: Improper Access Control

    CVE-2026-73931Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.5.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromi

  • 9.9 Critical severity

    Helidon: Improper Access Control

    CVE-2026-73930Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.19 and 4.0.0-4.5.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via

  • 8.3 High severity

    Helidon: Improper Access Control

    CVE-2026-73929Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.5.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromi

  • 7.2 High severity

    Helidon: Improper Access Control

    CVE-2026-73928Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.5.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromi

  • 7.5 High severity

    Helidon: Improper Access Control

    CVE-2026-73927Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.19. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to comprom

  • 8.2 High severity

    Helidon: Improper Access Control

    CVE-2026-73925Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 1.0.0-1.4.18. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to comprom

  • 9.1 Critical severity

    Helidon: Improper Access Control

    CVE-2026-73924Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 1.0.0-1.4.18. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to comprom

  • 9.1 Critical severity

    Helidon: Improper Access Control

    CVE-2026-73922Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 1.0.0-1.4.18. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to comprom

  • 9.8 Critical severity

    Helidon: Improper Access Control

    CVE-2026-73921Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 1.0.0-1.4.19. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to comprom

  • 9.4 Critical severity

    Helidon: Improper Access Control

    CVE-2026-73920Oracle

    Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromi