Weakness (CWE)
CWE-306: Missing Authentication for Critical Functionality
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
How to prevent it (5 mitigations)
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Architecture and Design
Divide the software into anonymous, normal, privileged, and administrative areas. Identify which of these areas require a proven user identity, and use a centralized authentication capability.
Identify all potential communication channels, or other means of interaction with the software, to ensure that all channels are appropriately protected, including those channels that are assumed to be accessible only by authorized parties. Developers sometimes perform authentication at the primary channel, but open up a secondary channel that is assumed to be private. For example, a login mechanism may be listening on one network port, but after successful authentication, it may open up a second port where it waits for the connection, but avoids authentication because it assumes that only the authenticated party will connect to the port.
In general, if the software or protocol allows a single session or user state to persist across multiple connections or channels, authentication and appropriate credential management need to be used throughout.
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Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
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Architecture and Design
Where possible, avoid implementing custom, "grow-your-own" authentication routines and consider using authentication capabilities as provided by the surrounding framework, operating system, or environment. These capabilities may avoid common weaknesses that are unique to authentication; support automatic auditing and tracking; and make it easier to provide a clear separation between authentication tasks and authorization tasks.
In environments such as the World Wide Web, the line between authentication and authorization is sometimes blurred. If custom authentication routines are required instead of those provided by the server, then these routines must be applied to every single page, since these pages could be requested directly.
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
For example, consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator [REF-45].
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Implementation, System Configuration, Operation
When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to require strong authentication for users who should be allowed to access the data [REF-1297] [REF-1298] [REF-1302].
Source: MITRE CWE-306
669 results · Clear filters · Feed
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Medium 6.2
A missing authentication for critical function vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 thr…
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Medium 6.3CVE-2026-5724 Public exploit
Missing Authentication on Streaming gRPC Replication Endpoint
The frontend gRPC server's streaming interceptor chain did not include the authorization interceptor. When a ClaimMapper and Authorizer are configured, unary RPCs enforce authentication and authorization, but the streaming AdminService/StreamWorkflowReplicati…
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Medium 6.5
Dockyard's Unauthenticated Cron Endpoint in Dockyard Enables Container Enumeration and Database Manipulation
Dockyard is a Docker container management app. Prior to 1.1.0, Docker container start and stop operations are performed through GET requests without CSRF protection. A remote attacker can cause a logged-in administrator's browser to request /apps/action.php?a…
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Medium 6.7
Junos OS: Privileged local user can gain access to a Linux-based FPC as root
A Missing Authentication for Critical Function vulnerability in command processing of Juniper Networks Junos OS allows a privileged local attacker to gain access to Linux-based line cards as root. This issue affects systems running Junos OS using Linux-based …
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Medium 5.9
Missing Authentication for Critical Function in coolercontrold
Unauthenticated functionality in CoolerControl/coolercontrold <4.0.0 allows unauthenticated attackers to view and modify potentially sensitive data via HTTP requests
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Medium 6.9CVE-2026-35584 Public exploit
FreeScout has an Unauthenticated IDOR in Open Tracking Endpoint Allows Cross-Conversation Thread Manipulation and Enumeration
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.212, the endpoint GET /thread/read/{conversation_id}/{thread_id} does not require authentication and does not validate whether the given thread_id belongs to the g…
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Medium 5.3
WWBN AVideo has Unauthenticated FFmpeg Remote Server Status Disclosure via check.ffmpeg.json.php
WWBN AVideo is an open source video platform. In versions 26.0 and prior, the plugin/API/check.ffmpeg.json.php endpoint probes the FFmpeg remote server configuration and returns connectivity status without any authentication. All sibling FFmpeg management end…
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Medium 5.3CVE-2026-28767 Public exploit
Gardyn Cloud API Missing Authentication for Critical Function
A specific administrative endpoint notifications is accessible without proper authentication.
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Medium 6.9
signalk-server: Unauthenticated Source Priorities Manipulation
Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.24.0-beta.1, the SignalK Server exposes an unauthenticated HTTP endpoint that allows remote attackers to modify navigation data source priorities. This endpoint, …
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Medium 6.3
ESWmail-Verify Bypass
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker with access to a victim's GINA account to bypass a second-password check and read protected emails.
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Medium 4.0
HCL BigFix Platform is affected by insufficient authentication
HCL BigFix Platform is affected by insufficient authentication. The application might allow users to access sensitive areas of the application without proper authentication.
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Medium 5.3
OpenViking 0.2.5 < 0.2.14 Bot Proxy Endpoints Allow Unauthenticated Access
OpenViking versions 0.2.5 prior to 0.2.14 contain a missing authentication vulnerability in the bot proxy router that allows remote unauthenticated attackers to access protected bot proxy functionality by sending requests to the POST /bot/v1/chat and POST /bo…
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Medium 5.3
AVideo: Missing Authentication in CreatePlugin list.json.php Template Affects 21 Endpoints
WWBN AVideo is an open source video platform. In versions 26.0 and prior, the AVideo CreatePlugin template for list.json.php does not include any authentication or authorization check. While the companion templates add.json.php and delete.json.php both requir…
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Medium 5.9CVE-2026-34227 Public exploit
Sliver One-Click Remote Access: Insecure CORS & Unauthenticated MCP Interface
Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to version 1.7.4, a single click on a malicious link gives an unauthenticated attacker immediate, silent control over every active C2 session or beacon, capable of exfiltra…
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Medium 5.3
Appsmith < 1.98 Unauthenticated Instance Configuration Disclosure via Management APIs
Appsmith versions prior to 1.98 expose sensitive instance management API endpoints without authentication. Unauthenticated attackers can query endpoints like /api/v1/consolidated-api/view and /api/v1/tenants/current to retrieve configuration metadata, license…
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Medium 5.3
Missing authentication for critical function vulnerability in BUFFALO Wi-Fi router products may allow an attacker to fo…
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Medium 6.5
AJAX Dashboard - Critical - Access bypass - SA-CONTRIB-2026-022
Missing Authentication for Critical Function vulnerability in Drupal AJAX Dashboard allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects AJAX Dashboard: from 0.0.0 before 3.1.0.
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Medium —
@grackle-ai/powerline Runs Without Authentication by Default
### Impact When `--token` is not provided and `GRACKLE_POWERLINE_TOKEN` is not set, the PowerLine gRPC server runs with **zero authentication**. A warning is logged (`"NO AUTH (development only)"`) but nothing prevents deployment in this state. Any client tha…
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Medium 6.8
Missing Authentication for Critical Function in GitLab
GitLab has remediated an issue in GitLab EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to access API tokens of self-hosted AI models due to improper access contr…
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Medium 5.7
SHARP routers do not perform authentication for some web APIs. The device information may be retrieved without authenti…
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Medium 6.9
Craft CMS: Unauthenticated users could execute project configuration sync operations that should be restricted trusted users
Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, guest users can access Config Sync updater index, obtain signed data, and execute state-changing Config Sync a…
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Medium 6.2
phpFileManager 1.7.8 Local File Inclusion via index.php
phpFileManager 1.7.8 contains a local file inclusion vulnerability that allows unauthenticated attackers to read arbitrary files by manipulating the action, fm_current_dir, and filename parameters. Attackers can send GET requests to index.php with crafted par…
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Medium 5.3
Auth bypass in Apache Artemis allows reading all internal messages
Apache Artemis before version 2.52.0 is affected by an authentication bypass flaw which allows reading all messages exchanged via the broker and injection of new message ( CVE-2026-27446 https://www.cve.org/CVERecord ). Since KNIME Business Hub uses Apache Ar…
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Medium 6.5
Unauthenticated Credential Disclosure via /goform/ate in Nexxt Nebula 300+
Missing authentication in the /goform/ate endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows an adjacent unauthenticated attacker to retrieve sensitive device information, including the administrator password. An attacker can …
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Medium 5.0
Shenzhen HCC Technology MPOS M6 PLUS Bluetooth missing authentication
A security vulnerability has been detected in Shenzhen HCC Technology MPOS M6 PLUS 1V.31-N. Affected by this vulnerability is an unknown functionality of the component Bluetooth. Such manipulation leads to missing authentication. The attack must be carried ou…
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Medium 5.0
OmniPEMF NeoRhythm BLE missing authentication
A security vulnerability has been detected in OmniPEMF NeoRhythm up to 20260308. This affects an unknown function of the component BLE Interface. Such manipulation leads to missing authentication. The attack can only be initiated within the local network. Thi…
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Medium 4.8
OpenClaw < 2026.2.21 - Unauthenticated Webhook Access via Passwordless Fallback in BlueBubbles Plugin
The BlueBubbles webhook handler in OpenClaw versions prior to 2026.2.21 contains a passwordless fallback authentication path that allows unauthenticated webhook events in certain reverse-proxy or local routing configurations. Attackers can bypass webhook auth…
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Medium 6.3
Yi Technology YI Home Camera CGI Endpoint ipc missing authentication
A vulnerability was found in Yi Technology YI Home Camera 2 2.1.1_20171024151200. The impacted element is an unknown function of the file home/web/ipc of the component CGI Endpoint. Performing a manipulation results in missing authentication. Access to the lo…
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Medium 6.9
OpenClaw < 2026.3.1 - Unauthenticated Browser Control Access via Failed Auth Bootstrap
OpenClaw versions prior to 2026.3.1 fail to properly handle authentication bootstrap errors during startup, allowing browser-control routes to remain accessible without authentication. Local processes or loopback-reachable SSRF paths can exploit this to acces…
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Medium 6.8
OpenClaw < 2026.2.22 - Gateway Token Disclosure via Chrome CDP Probe
OpenClaw versions prior to 2026.2.22 inject the x-OpenClaw-relay-token header into Chrome CDP probe traffic on loopback interfaces, allowing local processes to capture the Gateway authentication token. An attacker controlling a loopback port can intercept CDP…
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Medium 6.8
GL-iNet Comet (GL-RM1) KVM unauthenticated root access via UART serial console
The GL-iNet Comet (GL-RM1) KVM before 1.8.2 does not require authentication on the UART serial console. This attack requires physically opening the device and connecting to the UART pins.
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Medium 5.3
Tiandy Easy7 Integrated Management Platform Device Identifier UpdateLocalDevInfo.jsp missing authentication
A vulnerability was identified in Tiandy Easy7 Integrated Management Platform 7.17.0. Impacted is an unknown function of the file /WebService/UpdateLocalDevInfo.jsp of the component Device Identifier Handler. Such manipulation of the argument username/passwor…
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Medium 6.3
Socomec DIRIS A-40 HTTP API Authentication Bypass Vulnerability
Socomec DIRIS A-40 HTTP API Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Socomec DIRIS A-40 power monitoring devices. Authentication is not required to exploit …
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Medium 6.9
Parse Server GraphQL WebSocket endpoint bypasses security middleware
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.40 and 9.6.0-alpha.14, the GraphQL WebSocket endpoint for subscriptions does not pass requests through the Express middleware chain that enfor…
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Medium 6.5
Device Reboot Control
Missing authentication for critical function vulnerability in ABB AWIN GW100 rev.2, ABB AWIN GW120.This issue affects AWIN GW100 rev.2: 2.0-0, 2.0-1; AWIN GW120: 1.2-0, 1.2-1.
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Medium 6.9
The authentication mechanism for a specific feature in the EasyShare module contains a vulnerability. If specific condi…
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Medium 6.5
ZeptoClaw: Email Sender Spoofing to bypass Header-Only From Allowlist Validation
### Summary The email channel authorizes senders based on the parsed `From` header identity only. If upstream email authentication/enforcement is weak (for example, relaxed SPF/DKIM/DMARC handling), an attacker can spoof an allowlisted sender address and have…
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Medium 5.3
Booktics <= 1.0.16 - Missing Authorization to Addon Plugin Installation
The Booking Calendar for Appointments and Service Businesses – Booktics plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'Extension_Controller::update_item_permissions_check' function in all vers…
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Medium 5.3
Booktics <= 1.0.16 - Missing Authorization to Get Items via REST API endpoints
The Booking Calendar for Appointments and Service Businesses – Booktics plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on multiple REST API endpoints in all versions up to, and including, 1.0.16. This makes…
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Medium 5.5
WWBN AVideo - Unauthenticated IDOR - Playlist Information Disclosure
WWBN AVideo is an open source video platform. Prior to 25.0, the /objects/playlistsFromUser.json.php endpoint returns all playlists for any user without requiring authentication or authorization. An unauthenticated attacker can enumerate user IDs and retrieve…