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
663 results · Clear filters · Feed
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Medium 6.3
Improper verification of downloaded upgrades
The software downloads upgrade files without performing integrity checks, allowing the installation of tampered updates.
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Medium 5.3
Pantum BP5100DW Web omDB.shtml missing authentication
A security vulnerability has been detected in Pantum BP5100DW 3.A.4.7. The impacted element is an unknown function of the file /shtml/omDB.shtml of the component Web Interface. The manipulation leads to missing authentication. The attack may be initiated remo…
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Medium 5.9
Vikunja before 2.7.1 Missing Step-Up Authentication via TOTP Enrollment Endpoints
Vikunja before 2.7.1 contains a missing authentication vulnerability that allows attackers holding a stolen session to enroll and enable TOTP without the account password. Attackers can call the TOTP enroll and enable endpoints with their own secret to lock t…
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Medium 6.4
fast-agent: `fast-agent serve` binds HTTP to 0.0.0.0 with no authentication by default; with --shell this is unauthenticated remote command execution
fast-agent is a framework for building, running, and evaluating AI agents with Model Context Protocol support. Prior to 0.7.21, fast-agent serve uses HTTP transport bound to 0.0.0.0 on port 8000 without authentication, allowing any network client that can rea…
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Medium 4.6
Hisense VIDAA Smart TV UPnP/DLNA Missing Authentication
Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 contains a missing authentication vulnerability in the UPnP/DLNA RenderingControl service on TCP port 38400 that allows a LAN-adjacent attacker to issue SetVolume, SetMute, and SelectPreset(FactoryDefaults) c…
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Medium 4.6
Hisense VIDAA Smart TV SSRF via SetAVTransportURI CurrentURI
Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 contains an input validation vulnerability in the UPnP/DLNA AVTransport SOAP service that allows a LAN-adjacent attacker to inject arbitrary URIs via the CurrentURI field of SetAVTransportURI without validati…
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Medium 6.3
Hisense VIDAA Smart TV DIAL Service Unauthenticated Access
Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 contains an unauthenticated access vulnerability in the DIAL (Discovery and Launch) service on TCP port 56789, which accepts control requests from any LAN-adjacent device without authentication, pairing, or u…
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Medium 6.7
In JetBrains IntelliJ IDEA before 2026.3 code execution was possible via the unauthenticated JDBC worker RMI endpoint
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Medium 5.0
In JetBrains CLion before 2026.3, 2026.2.4.1 missing authentication allowed local users to obtain the debug session env…
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Medium 6.9
FlexNet Beacon Missing Authentication Vulnerability
Missing authentication in the FlexNet Beacon component of Flexera One and FlexNet Manager Suite allows unauthenticated remote attackers to obtain Beacon policy and targeting information when anonymous web server access is enabled (the default).
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Medium 5.3
OpenEMR: Unauthenticated Information Disclosure in admin.php Exposes Database Names and Versions
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, the webroot admin.php multisite administration page is enabled without an authentication check, reads database configuration from sqlconf.…
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Medium 6.2
OpenHuman: Unauthenticated server-sent events endpoint leaks user-facing event data
OpenHuman is an open-source agent harness available as a desktop application and Rust library. Before 0.56.0, the local server exposes the server-sent events endpoint at /events without bearer authentication, permits cross-origin browser access, and uses only…
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Medium 6.3
OpenHands Landing missing authentication
A vulnerability has been found in OpenHands up to 1.24.0. This impacts an unknown function of the component Landing Page. Such manipulation leads to missing authentication. The attack must be carried out from within the local network. The exploit has been dis…
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Medium 5.3
NocoDB 0.300.0 before 2026.08.0 Unauthenticated OAuth Authorization Code Creation
NocoDB 0.300.0 before 2026.08.0 contains a missing authentication vulnerability in the POST /api/v2/oauth/authorize handler that allows unauthenticated attackers to create OAuth authorization codes. Attackers can send anonymous requests with client_id, redire…
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Medium 5.9
WPPConnect Server through 2.10.74 Missing Authentication via /api/:session/chatwoot
WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp messages by calling the Chatwoot webhook route without verifyToken middleware. Attackers who know or guess a connected ses…
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Medium 6.8
Nexbox A95X Amlogic S905X UART Unauthenticated Console Access
Nexbox A95X TV boxes built on the Amlogic S905X platform contain an unauthenticated console exposed via an internal UART header on the PCB that allows physical attackers to obtain an interactive shell as uid 2000 (system) without any credentials. Attackers wi…
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Medium 5.3
WAVLINK WN536AX6-A VPN Client List ioos sub_41a7c0 missing authentication
A vulnerability was detected in WAVLINK WN536AX6-A V260507_2.0.0. Impacted is the function sub_416d48/sub_41a7c0 of the file /bin/ioos of the component VPN Client List Handler. Performing a manipulation of the argument opt results in missing authentication. T…
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Medium 6.9
Coop: Unauthenticated org provisioning via GraphQL Mutation.createOrg
Coop is an open source review and moderation tool from ROOST. Prior to 1.0.0, the `GraphQL` `Mutation.createOrg` operation allows an unauthenticated actor to create arbitrary organizations on a publicly accessible instance. In addition to creating noise in th…
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Medium 5.3
SerpBear before 3.1.1 Missing Authentication via POST /api/notify
SerpBear before 3.1.1 contains a missing authentication vulnerability in pages/api/notify.ts that allows remote unauthenticated attackers to trigger notification emails because verifyUser() is never called. Attackers can repeatedly POST to /api/notify, option…
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Medium 5.4
Dell OpenManage Enterprise, versions prior to 4.8.0, contains a Missing Authentication for Critical Function vulnerabil…
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Medium 5.2
Kaspersky has fixed a vulnerability in the Network Agent for Windows module of Kaspersky Security Center. The vulnerabi…
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Medium 6.9
When pretix is used as the identity provider in a Single-Sign-On (SSO) setup for customer accounts, the system did not …
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Medium 5.3
Unauthenticated Wireless Regulatory Region Configuration in TP-Link RE305
An authorization vulnerability exists in the country or region configuration interface of TP-Link RE305 V3. An unauthenticated attacker on the same local network may modify the wireless regulatory region and force the device to reapply its wireless configurat…
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Medium 6.0
Fireware OS Missing Authentication in FireCluster State Sync Allows BOVPN Tunnel Denial of Service
A missing authentication vulnerability in Fireware OS's FireCluster state synchronization feature allows an unauthenticated attacker positioned on the cluster synchronization network segment to force premature VPN tunnel termination by sending crafted cluster…
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Medium 6.5
SourceCodester Online Food Ordering System delete_admin.php missing authentication
A vulnerability has been found in SourceCodester Online Food Ordering System 1.0. The affected element is an unknown function of the file admin/delete_admin.php. The manipulation of the argument ID leads to missing authentication. It is possible to initiate t…
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Medium 6.5
OpenPanel before 3.0.0 Missing Authentication on Worker Bull Board
OpenPanel before 3.0.0 contains a missing authentication vulnerability that allows unauthenticated attackers to access the Bull Board dashboard served on the worker HTTP port. Attackers can query /api/queues and call mutating Bull Board APIs to add, retry, or…
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Medium 4.4
An authentication issue was addressed with improved state management. This issue is fixed in iOS 26.7.2 and iPadOS 26.7…
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Medium 5.9
OmniRoute 3.8.50 before 3.8.52 Missing Authentication via /api/sync/tokens
OmniRoute 3.8.50 before 3.8.52 contains a missing authentication vulnerability that allows unauthenticated attackers to issue sync tokens via POST /api/sync/tokens when requireLogin is disabled. Attackers can use the issued token against GET /api/sync/bundle …
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Medium 5.3
Missing Authentication for Critical Function in boneIO
boneIO Black directly excludes several API endpoints from the authentication. An unauthenticated remote attacker on the local network can retrieve system logs, firmware version, serial number, MQTT username, configuration file listings, and API documentation.…
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Medium 6.5
Docker-Proxy through 5.1.9 Missing Authentication via hubcmdui /api/config
Docker-Proxy through 5.1.9 contains a missing authentication vulnerability in the hubcmdui routes/config.js that allows unauthenticated attackers to read and overwrite configuration via /api/config. Attackers can retrieve the WeChat webhook URL and Telegram b…
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Medium 6.5
Goobi viewer: WebSocket endpoints lack server-side authentication and origin validation
The Goobi viewer is a web application that allows digitised material to be displayed in a web browser. From version 4.11.0 to before version 26.05, several Jakarta WebSocket endpoints in goobi-viewer-core (DownloadTaskEndpoint, CampaignEndpoint, AutocompleteE…
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Medium 5.9
NetBox MCP Server: HTTP transport exposes all NetBox data without authentication
NetBox MCP Server is a simple read-only Model Context Protocol server for NetBox. Prior to version 1.2.1, when running with TRANSPORT=http, the MCP server has no authentication on the HTTP endpoint. Any client that can reach the port gets a valid MCP session …
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Medium 6.9
Missing Authentication in CGM CLININET
The CGM CLININET application runs the cgm-updater process listening on an open network port without any authentication. The vulnerability was confirmed to affect versions up to 2026.MS3. Version 2026.MS3 with the updater-upkg component in version 5.3.0 or hig…
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Medium 5.3
Kiloview E3 NDI Encoder Missing Authentication for Critical Function
The ONVIF device service on the E3 responds to certain informational requests without requiring authentication. A remote, unauthenticated party can retrieve detailed device identifiers along with a list of configured user accounts and their privilege levels. …
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Medium 6.5
oretnom23 file-management-system-php AJAX ajax.php delete_folder missing authentication
A vulnerability has been found in oretnom23 file-management-system-php up to 2e3c1ebe60f121e8df4fb3f544f0e9591d9a01e4. This vulnerability affects the function delete_folder of the file ajax.php of the component AJAX Handler. The manipulation of the argument I…
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Medium 4.8
Incomplete reCaptcha Implementation in Authentication Flows in WSO2 Identity Server Allows Brute Force Attacks
Due to an incomplete implementation, reCaptcha is not applied to certain authentication flows even when the reCaptcha option is enabled. This oversight permits attackers to bypass the intended protection mechanism. Brute force attacks, if successful, can lead…
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Medium 5.3
dhikshitha29 Insurance-Management-System Plan Management Form AddNewPlan-inc.php missing authentication
A security vulnerability has been detected in dhikshitha29 Insurance-Management-System 91de5edda5baa109ad8e9baf03ce6a3ceda84183/125362cc21dca20d74091a4913a5096bb58dd837. This affects an unknown part of the file /Admin/includes/AddNewPlan-inc.php of the compon…
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Medium 6.5
Trigger.dev before 4.5.0 Missing Authentication in Dashboard Run Replay Action
Trigger.dev before 4.5.0 performs no authentication or organization check in the action handler of the dashboard run replay route (resources.taskruns.$runParam.replay) and looks up the run by friendlyId alone. A remote attacker who knows a victim's run friend…
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Medium 5.3
Trigger.dev before 4.5.5 Unauthenticated Realtime Stream Data Injection via Streams Endpoint
Trigger.dev before 4.5.5 contains a missing authentication vulnerability in the realtime streams POST handler that allows unauthenticated attackers to inject data into run streams. Attackers can send POST requests to /realtime/v1/streams/:runId/:streamId with…
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Medium 5.3
Vulnerability in the PeopleSoft Enterprise FIN Common Objects Brazil product of Oracle PeopleSoft (component: eProcurem…