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
1,113 results · Clear filters · Feed
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Critical 9.0
OpenChoreo: cluster-gateway internal proxy performs no caller authentication and is not read-only — data-plane Secret disclosure and arbitrary Kubernetes mutation
OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.3, 1.1.3, and 1.2.0-rc.2, internal/cluster-gateway/server.go exposed /api/proxy/, /api/exec/, and /api/wirelogs/ on an internal listener without requiring a client certifica…
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Critical 9.8
AgenticSeek Unauthenticated RCE via /query API Endpoint
AgenticSeek (commit fc242c7) contains an unauthenticated remote code execution vulnerability that allows any network-adjacent attacker to execute arbitrary commands by submitting crafted queries to the unprotected POST /query API endpoint bound to 0.0.0.0:777…
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Critical 9.4
IBM WebSphere Application Server Liberty is affected by an authenication bypass
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 IBM WebSphere Application Server Liberty is vulnerable to an authentication bypass when the rtcomm-1.0 or rtcommGateway-1.0 feature is enabled.
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Critical 9.8
WebErpMesv2 has Unauthenticated RCE via Unrestricted File Upload in HR Expense scan_file (CWE-434)
WebErpMesv2 is a Resource Management and Manufacturing execution system Web for industry. Versions 1.19 and prior allow any self-registered user to upload arbitrary PHP files through the HR Expense scan_file parameter, leading to Remote Code Execution. Combin…
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Critical 9.3
Priority – CWE-306: Missing Authentication for Critical Function
: Missing Authentication for Critical Function vulnerability in Priority Portal Generator addon to Priority ERP (developed by Soft Solutions). This issue affects Portal Generator addon to Priority ERP (developed by Soft Solutions): All versions without Priwal…
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Critical 9.8
UpSnap - Unauthenticated Initial-Superuser Takeover Chains to Root RCE via wake_cmd
UpSnap is a wake on lan web app. Versions 4.4.1 through 5.3.5 are vulnerable to a missing-authentication / privilege-escalation chain in `pb.HandlerInitSuperuser` (`backend/pb/handlers.go:249`), reachable as `POST /api/upsnap/init-superuser`. The vulnerable c…
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Critical 9.4CVE-2026-73296 Public exploit
Microsoft UFO: Unauthenticated Mobile MCP access allows remote Android device control and screen disclosure
Microsoft UFO open-source framework for intelligent automation across devices and platforms. Prior to 3.0.8, create_mobile_data_collection_server and create_mobile_action_server in ufo/client/mcp/http_servers/mobile_mcp_server.py exposed Streamable HTTP MCP s…
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Critical 9.8
WhatsUp Gold versions prior to 26.0.2 contain an unauthenticated remote code execution vulnerability in an internal report scheduling service.
In WhatsUp Gold versions released before 2026.0.2, an unauthenticated remote attacker with network access to the affected service can execute arbitrary code in the context of the IIS application service account.
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Critical 9.4
Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability
Incorrect authorization in Microsoft Azure Kubernetes Service allows an authorized attacker to elevate privileges over a network.
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Critical 9.8
SeaweedFS: Unauthenticated filer IAM gRPC service grants S3 administrative control
SeaweedFS is a distributed storage system. Prior to 4.24, the filer registers the SeaweedIdentityAccessManagement gRPC service without mandatory authentication when jwt.filer_signing.key is unset, allowing any client that can reach the filer gRPC port to invo…
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Critical 10.0CVE-2026-58115 Public exploit
A vulnerability has been identified in SIMATIC IoT2050 Advanced (6ES7647-0BA00-1YA2) (All versions < V4.3.4-1 running I…
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Critical 9.1
AVideo Unauthenticated Arbitrary File Write via aVideoEncoderChunk.json.php
AVideo contains an unauthenticated arbitrary file write vulnerability in the aVideoEncoderChunk.json.php endpoint that allows remote attackers to write up to 4 GB of arbitrary content to the server filesystem via HTTP PUT requests without authentication. Atta…
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Critical 9.2
Insufficient Webserver Authentication
TBEA TLogger V2.1.0.0B0.0.0.0 contains an authentication bypass in its web server. After a user has previously authenticated to the device, an unauthenticated attacker can directly access protected functionality through the /index.asp endpoint without providi…
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Critical 9.8
dulldusk phpfm - Missing Authentication by Default Allows Full Filesystem Access
A missing authentication vulnerability in dulldusk/phpfm through 1.8.0 allows an unauthenticated remote attacker to access the full file manager functionality including reading, writing, deleting, and uploading files anywhere on the server filesystem.
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Critical 9.8
NASA fprime-gds - Missing Authentication and Path Traversal Enable Unauthenticated RCE and Spacecraft Command Injection
Multiple vulnerabilities in NASA fprime-gds through 3.4.3 allow an unauthenticated remote attacker to achieve arbitrary code execution on the ground station host and inject arbitrary commands to connected spacecraft. The Flask application in src/fprime_gds/fl…
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Critical 9.6
OpenYak local API: unauthenticated CSRF chain leads to Remote Code Execution
OpenYak is a local-first agent runtime for reliable tool-using models, with a desktop workspace built on top. Prior to version 1.1.3, the OpenYak desktop backend binds an HTTP API to `127.0.0.1:<random port>` (commonly 19141) without server-side Origin valida…
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Critical 9.8CVE-2026-61808 Scanner template
LightRAG: Missing Authentication for Critical API Functions in Default Configuration
LightRAG provides simple and fast retrieval-augmented generation. Through version 1.5.4, the LightRAG API server binds to all network interfaces with authentication disabled by default, allowing an unauthenticated network attacker to read indexed document con…
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Critical 10.0
Microsoft Planetary Computer Pro Elevation of Privilege Vulnerability
Missing authentication for critical function in Microsoft Planetary Computer Pro allows an unauthorized attacker to elevate privileges over a network.
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Critical 9.1
Ground Station prior to 0.6.0 Unauthenticated Database Wipe and Arbitrary Data Injection via Socket.IO database_backup full_restore Action
Ground Station prior to 0.6.0 contains an unauthenticated database-destruction and arbitrary-data-injection vulnerability in the Socket.IO server's database_backup event handler that allows any unauthenticated network peer to wipe or replace the entire SQLite…
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Critical 9.6
Nuxt.js Unauthenticated WebSocket RPC Call Leading to Remote Code Execution
Nuxt is an open-source web development framework for Vue.js. Prior to 3.3.1, Nuxt DevTools (development mode only) exposes a bidirectional RPC channel over the Vite HMR WebSocket via the nuxt:devtools:rpc plugin. On affected versions the channel has no authen…
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Critical 9.8
NASA-AMMOS ANMS / JHUAPL dtnma-tools Unauthenticated Remote Command Execution via Exposed AMP Manager REST API
The NASA-AMMOS Asynchronous Network Management System (ANMS) reference implementation's default docker-compose.yml publishes the amp-manager service's REST API directly to the host network interface (port 8089, e.g. ":8089/tcp") with cap_add: NET_ADMIN, NET_R…
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Critical 9.8
IoTSharp BlobStorageController Missing Authentication and Path Traversal
IoTSharp BlobStorageController.cs lacks the [Authorize] attribute applied to every other controller in the application (DevicesController, CustomersController, TenantsController, etc.), and no global authorization FallbackPolicy is configured in Startup.cs, l…
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Critical 9.8
NASA-AMMOS plandev - Client-Supplied session_variables Bypass Hasura-Origin Authorization in sequencing-server
The Aerie/PlanDev sequencing-server's authorization middleware (sequencing-server/src/app.ts) derives the caller's Hasura session role via getHasuraSession, which prefers a session_variables object taken directly from the client-supplied JSON request body ove…
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Critical 9.8
MaxSite CMS 109.5 Unauthenticated AJAX Dispatcher Bypass via ajax.php
MaxSite CMS 109.5 and earlier contains an authentication bypass vulnerability in the AJAX dispatcher that allows unauthenticated attackers to access admin-gated endpoints by supplying any X-Requested-With header and requesting a base64-encoded path resolving …
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Critical 9.8
Atlas-Livre Unauthenticated Access via Admin Controllers Missing Exit
Atlas-Livre contains an improper access control vulnerability in the admin controllers under Espace_admin/controleur/ that allows unauthenticated attackers to bypass session-based authentication guards by sending raw HTTP requests that ignore redirects. Attac…
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Critical 9.8
Authentication bypass via spoofed HTTP headers Orchestrator REST API
Multiple vulnerabilities in the REST API interface of HPE Networking SD-WAN Orchestrator could allow an unauthenticated remote attacker to bypass web authentication mechanisms and access system functions. Successful exploitation could allow an attacker to vie…
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Critical 9.8
Puwell IP Camera 2.x - 4.x Unauthenticated Access via TCP Port 23456
Puwell IP Camera firmware versions 2.x through 4.x contains an authentication bypass vulnerability that allows unauthenticated attackers to access device functions by sending protocol-conforming packets over TCP port 23456 without credentials. Attackers can e…
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Critical 9.8
Krayin CRM 2.2.4 Missing Authentication via install/api/admin-config-setup
Krayin CRM 2.2.4 contains a missing authentication vulnerability in the installer middleware that allows unauthenticated remote attackers to overwrite the primary administrator account by sending a crafted HTTP POST request with the X-Requested-With: XMLHttpR…
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Critical 9.8
LazyOwn: Unauthenticated Socket.IO `input` Event Reaches LazyOwn Command Dispatcher — Unauthenticated RCE
LazyOwn RedTeam/APT Framework is an AI-powered C2 and red-team operations framework. Prior to 0.2.154, LazyOwn's lazyc2.py registers an unauthenticated Socket.IO input event handler that dispatches data.get('value') to LazyOwnShell.one_cmd, reaching LazyOwnSh…
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Critical 9.8CVE-2026-67208 Scanner template
Juggle 1.6.0 Unauthenticated RCE via Exposed H2 Console
Juggle through 1.6.0 contains a remote code execution vulnerability that allows unauthenticated remote attackers to execute arbitrary OS commands by connecting to the exposed H2 database web console using default shipped credentials. Attackers can access the …
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Critical 9.8
Spikster Missing Authentication via API Route Group
Spikster through commit e1cdf8c contains a missing authentication vulnerability that allows unauthenticated remote attackers to access all API routes by exploiting the unattached CipiAuth middleware, which is registered but never applied to any route in the A…
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Critical 9.8
OCPP reconfiguration vulnerability
Due to missing authentication the CHARX OCPP Agent service allows an unauthenticated remote attacker to reconfigure the backend connection. This can lead to Denial-of-Service and confidential data being disclosed to the attacker.
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Critical 9.4
JupiCore charging point reconfiguration without auth
The CHARX JupiCore service allows an unauthenticated remote attacker to reconfigure charging points. This can lead to disclosure of charging point UIDs, Denial-of-Service and files tampering.
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Critical 9.8
Missing authentication for MQTT Broker
Due to missing authentication, an unauthenticated remote attacker may access the MQTT broker, which is only protected from external access by a firewall. This may lead to the device being fully compromised.
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Critical 9.3
Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration
Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.7, the standalone flyto-verification service in src/core/verification_service.py exposes unauthenticated POST /run on 0.0.0.0:8344 and uses client-supplied callback_url fo…
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Critical 9.4
IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a server-side request forgery
IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 traditional is vulnerable to server-side request forgery (SSRF) when the SIP container feature (sipServlet-1.1) is enabled.
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Critical 9.8
AIT-DSN < 2.2.2 Missing Authentication via SLE API Routes
AMMOS Instrument Toolkit (AIT) Deep Space Network (DSN) Interface before 2.2.2 contains a missing authentication vulnerability in the Space Link Extension (SLE) interface manager that allows unauthenticated network attackers to access seven unprotected API ro…
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Critical 9.8
AIT-GUI < 2.5.1 Missing Authentication via Sessions.create()
AMMOS Instrument Toolkit (AIT) GUI before 2.5.1 contains a missing authentication vulnerability that allows any unauthenticated network attacker to obtain a valid session and issue arbitrary spacecraft commands by calling Sessions.create() without any credent…
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Critical 9.1
goshs SFTP authentication bypass via empty password (incomplete fix of CVE-2026-40884)
goshs is a feature-rich single-binary file server for red teamers and developers. From 2.1.3 until 2.1.4, the sftpserver/sftpserver.go password handler used Username != "" && Password != "", so running goshs with -b 'admin:' -sftp and no -fkf left both SFTP a…
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Critical 9.8
IBM WebSphere Application Server is affected by a privilege escalation
IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to broken access control/privilege escalation in the administrative console.