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
1,261 results · Clear filters · Feed
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High 8.1
ell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to 5.36.00.00, contains …
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High 7.3
SourceCodester Simple Traffic Offense System User Creation saveuser.php missing authentication
A vulnerability was detected in SourceCodester Simple Traffic Offense System 1.0. Affected is an unknown function of the file saveuser.php of the component User Creation. Performing a manipulation of the argument position results in missing authentication. Th…
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High 7.5CVE-2026-86259 Public exploit
OpenMAIC before 1.0.1 SSRF via Environment-Gated URL Validation
OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parame…
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High 8.1CVE-2026-86242 Scanner template
Unauthenticated RCE via Custom Plugin HTTP Path on Dynamically Linked Builds
Bifrost HTTP transport before 2.0.0 accepts an enabled custom plugin whose path is an HTTP URL through unauthenticated POST /api/plugins when management authentication is disabled (the default, governance.auth_config.is_enabled=false). The shared-object loade…
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High 8.8CVE-2026-67277 Exploited
Kernel memory disclosure and denial of service in MikroTik RouterOS btest service
RouterOS accepts a "related" btest connection before the corresponding primary session has completed authentication. An unauthenticated client can use this state to start an IPv4 UDP test. With "random-data=false", the sender transmits an uninitialized tail f…
KEV Sep 10, 2026 -
High 7.5
TypeSpec: Unauthenticated Remote Shutdown of Spector Mock Server via POST /.admin/stop
### Summary `@typespec/spector` registers a `POST /.admin/stop` HTTP route with no authentication, authorization token, Origin check, or IP-source restriction. Any network-reachable client can send a single unauthenticated POST request to terminate the mock s…
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High 7.3
ramon-victor freegpt-webui Backend Conversation API backend.py _conversation missing authentication
A security vulnerability has been detected in ramon-victor freegpt-webui up to 098db3dfeb41555c2ca9269df0f13e10ec1c35dc. Affected is the function _conversation of the file server/backend.py of the component Backend Conversation API. Such manipulation of the a…
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High 8.1
Nango < 0.71.6 Missing Authentication RCE via runner tRPC server
Nango before 0.71.6 contains a missing authentication vulnerability in the runner tRPC server that allows unauthenticated attackers to execute arbitrary JavaScript code by invoking the exposed start procedure without credentials. Attackers with network access…
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High 7.5
QAnything 2.0.0 Unauthenticated Cross-User File Disclosure
QAnything 2.0.0 contains an authentication bypass vulnerability in the /api/local_doc_qa/get_file_base64 and /api/local_doc_qa/get_doc endpoints that allows unauthenticated attackers to access any uploaded file or document. Attackers can enumerate file identi…
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High 7.7
Mandatory MFA bypass before enrollment
SEPPmail Secure Email Gateway before 15.0.7 creates a fully privileged session before required multi-factor authentication enrollment is completed. An attacker with the password for an MFA-required but unenrolled account can access protected functionality wit…
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High 8.6
Windows ML CLI: CORS misconfig enables localhost RCE
Windows ML CLI is a command line tool for building portable, performant, and high-quality AI models for Windows ML. Prior to 0.4.0, the src/winml/modelkit/serve/cli_api.py component exposes WinML CLI commands through a localhost HTTP API without authenticatio…
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High 7.5
APITable through 1.13.0-beta.1 Missing Authentication on the Internal Organization Load or Search Endpoint
APITable through 1.13.0-beta.1 exposes the internal organization loadOrSearch endpoint without authentication, allowing unauthenticated attackers to retrieve member names, email addresses, and team hierarchy. Attackers can query the endpoint with space identi…
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High 8.6
Pika Unauthenticated Replication Access via Internal Protobuf Port
PikiwiDB (Pika) v3.5.7 exposes an internal protobuf replication server on a port derived from the client port plus 2000 (e.g. 11221 when the default client port 9221 is used) that does not authenticate incoming requests. Although requirepass is intended to ga…
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High 8.2
Phison PS3111-S11 Controller Firmware Missing Authentication on Vendor Unique Commands
Phison PS3111-S11 controller firmware versions through SBFQT1.3 expose privileged vendor unique commands over the ATA interface with absent or defeatable authentication mechanisms. Attackers can bypass the weak CRC-16 based unlock handshake or exploit builds …
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High 8.6
Oxford Nanopore MinKNOW before 24.06 relies on a client's source IP address for authentication.
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High 7.3
Casdoor upload-resource API resource.go missing authentication
A vulnerability has been found in Casdoor up to 4.0.0. This affects an unknown function of the file controllers/resource.go of the component upload-resource API. Such manipulation leads to missing authentication. It is possible to launch the attack remotely. …
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High 8.2
Unauthenticated Denial of Service Vulnerabilities in API Endpoint of HPE Networking Fabric Composer
Vulnerabilities in an API endpoint of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to conduct a denial of service attack. Successful exploitation could allow an attacker to make limited unauthorized modifications to the underl…
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High 8.6
Authentication Bypass in the API of HPE Networking Fabric Composer allows Data Exposure and Unauthorized Changes
A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to obtain limited system information and to change the state of certain settings of a vulnerable system. Successful exploitation could allow an attacke…
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High 7.5
Missing Authentication for Critical Function in TMT Machine's Talassoft Industrial Management Software
Missing authentication for critical function vulnerability in TMT Machine Industry and Trade Ltd. Co. Talassoft Industrial Management Software allows Authentication Bypass. This issue affects Talassoft Industrial Management Software: from V4 before V.16.
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High 7.0
ControlFLASH ® – Improper Access Control
A security issue exists within ControlFLASH™, where the installer grants write permissions to the "Everyone" group on a product installation directory. This could allow arbitrary code execution, resulting in an attacker being given the ability to run any comm…
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High 7.3
cu silicon edit Endpoint views.py create_app missing authentication
A vulnerability was identified in cu silicon up to 0.1.5. Affected by this vulnerability is the function create_app of the file views.py of the component edit Endpoint. Such manipulation leads to missing authentication. The attack may be performed from remote…
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High 7.5
Missing Authentication for Critical Function in wallos
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.4, endpoints/db/migrate.php executes database schema migrations when called over HTTP with zero authentication. Any unauthenticated attacker can trigger pending migrat…
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High 7.5
Keep Backup Daily WordPress Plugin < 2.1.4 Sensitive Information Exposure via kbd_cron_process
Keep Backup Daily plugin for WordPress before 2.1.4 contains a sensitive information exposure vulnerability that allows unauthenticated attackers to trigger a full MySQL database dump by accessing the publicly exposed `kbd_cron_process` parameter without auth…
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High 8.1
ProfilePress WordPress Plugin < 4.17.2 Unauthenticated Arbitrary Plugin Installation RCE
ProfilePress (wp-user-avatar) WordPress plugin before 4.17.2 contains an unauthenticated remote code execution vulnerability that allows unauthenticated attackers to install and activate arbitrary plugins by brute-forcing a weak 32-bit connect token via the p…
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High 8.6
Keploy 3.1.0-3.6.25 Unauthenticated TLS Key Exposure
Keploy versions 3.1.0 through 3.6.25, fixed in 3.6.26, bind the agent control-plane HTTP server to all interfaces without authentication, exposing endpoints that stream TLS session keys and traffic data. Attackers can access the /agent/pcap/keylog endpoint to…
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High 8.2
KubeEdge CloudCore through 1.23.1 Missing Authentication on Node Task Endpoints
KubeEdge CloudCore through 1.23.1 accepts node task status reports on its HTTPS server without authentication verification. Attackers can reach CloudCore on port 10002 to mark upgrade jobs as succeeded or failed, deceiving the control plane about node upgrade…
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High 7.5
Documenso before 2.13.0 Unauthenticated File Upload via /api/files/upload-pdf
Documenso before 2.13.0 accepts PDF file uploads on the /api/files/upload-pdf endpoint without requiring authentication, session tokens, or API credentials. Unauthenticated attackers can upload arbitrary PDF files indefinitely to exhaust storage resources or …
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High 8.0
Atlantis GitHub App Setup Endpoint Returns App Credentials to Unauthenticated Callers
Atlantis through 0.47.1 fails to authenticate the /github-app/setup endpoint, allowing unauthenticated attackers to access GitHub App credentials. Attackers can observe or intercept the GitHub redirect during setup to obtain the RSA private key and webhook se…
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High 8.1
Ebyte NA111-M Missing Authentication for Critical Function
Ebyte gateway product's vendor configuration utility does not require authentication before allowing certain disruptive administrative actions when default credentials remain configured. An unauthenticated attacker on the adjacent network could reboot the dev…
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High 7.5
Unitree G1 EDU 1.5.2 BLE GATT RCE via WiFi Provisioning Stack
Unitree G1 EDU firmware through 1.5.2 contains multiple chained vulnerabilities in the BLE GATT server and WiFi provisioning stack that allow unauthenticated proximate attackers to achieve root code execution without pairing or credentials by exploiting an un…
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High 8.8CVE-2026-76639 Public exploit
Unitree G1 EDU 1.5.2 Unauthenticated RCE via DDS Bridge and Path Traversal
Unitree G1 EDU firmware through 1.5.2 contains an unauthenticated remote code execution vulnerability that allows network-adjacent attackers to execute arbitrary commands as root by chaining three weaknesses: an unauthenticated WebRTC-to-DDS bridge on TCP por…
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High 8.2
APITable through 1.13.0-beta.1 Missing Authentication on the Internal Account Closure Endpoints
APITable through 1.13.0-beta.1 annotates both getUserHistories and closePausedUserAccount in InternalUserController with requiredLogin = false. ResourceInterceptor honours that annotation by returning before any session or API key is validated, and the nginx …
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High 7.3
itsourcecode Payroll System CRUD Operation ajax.php delete missing authentication
A flaw has been found in itsourcecode Payroll System 1.0. The impacted element is the function create/read/update/delete of the file ajax.php of the component CRUD Operation Handler. Executing a manipulation of the argument action can lead to missing authenti…
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High 8.1
NVIDIA NemoClaw for Linux contains a vulnerability in its inference server setup, where a remote attacker may access th…
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High 8.2
djust authentication bypass: a login_required / on_mount LiveView mount redirect does not close the WebSocket, allowing an unauthenticated client to dispatch event-handler calls
djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to 1.0.4, LiveViewConsumer.handle_mount sends a `{"type":"navigate","to":...}` frame when login_required, permission_required, or a redirectin…
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High 8.2
PraisonAI: Authentication fail-open in Recipe server allows unauthenticated access when API key or JWT auth is configured without a secret
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, create_auth_middleware() allows requests when auth=api-key lacks PRAISONAI_API_KEY or JWT authentication lacks PRAISONAI_JWT_SECRET. An externally bound Recipe server can therefore accept una…
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High 8.6
PraisonAI: [Auth Bypass] PraisonAI async Jobs API (`/api/v1/runs`) has no authentication — unauthenticated job execution, result theft, cancel and delete
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.51, the Jobs API create_app function mounts /api/v1/runs without authentication. Any reachable caller can submit jobs, read results, cancel runs, or delete jobs using operator credentials. The fi…
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High 7.3
PraisonAI: [Auth Bypass] `praisonai serve agents --api-key` is silently ignored — agent-invocation routes (`POST /agents`, `POST /agents/{agent_name}`) run unauthenticated
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.51, praisonai serve agents parses config["api_key"] but _create_agents_app() does not authenticate POST /agents or POST /agents/{agent_name}. Missing or incorrect bearer and X-API-Key values stil…
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High 8.6
PraisonAI serve agents --api-key is ignored, allowing unauthenticated remote agent execution
PraisonAI is a multi-agent teams system. From praisonai 4.6.34 until 4.6.58, praisonai serve agents accepts --api-key but _create_agents_app() does not authenticate POST /agents or POST /agents/{agent_name}. A network caller can invoke configured agents witho…
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High 8.2
praisonaiagents: AgentServer declares auth_token but never enforces it on any route (CWE-862)
PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, AgentServer exposes ServerConfig.auth_token but AgentServer._create_app does not check it on any route. A remote caller can subscribe, publish, and perform other actions without a valid…