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
3,155 results · Feed
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Critical 9.8CVE-2026-116485 Scanner template
danmu_api before 1.21.7 Authentication Bypass via Default Token in Env Endpoints
danmu_api before 1.21.7 contains an authentication bypass vulnerability that allows unauthenticated attackers to modify server environment configuration when the default TOKEN is used and ADMIN_TOKEN is unset. Attackers can send POST requests to /api/env/set,…
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High 7.3
BillaBear Installation InstallController.php processInstall missing authentication
A vulnerability was determined in BillaBear up to 2025.01.03. Affected by this issue is the function processInstall of the file src/BillaBear/Controller/InstallController.php of the component Installation Handler. This manipulation causes missing authenticati…
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Low 3.3
777genius agent-teams-ai Local HTTP Service HttpServer.ts doStart missing authentication
A vulnerability was found in 777genius agent-teams-ai up to 2.17.10. This issue affects the function doStart of the file src/main/services/infrastructure/HttpServer.ts of the component Local HTTP Service. The manipulation results in missing authentication. Th…
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High 7.3
GiantappMan LiveWallPaper SignalR Hub UploadFile missing authentication
A vulnerability was found in GiantappMan LiveWallPaper 2.6.8.0 on Windows. This issue affects some unknown processing of the file /LiveWallpaper/UploadFile of the component SignalR Hub. Performing a manipulation results in missing authentication. The attack i…
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Medium 6.5CVE-2026-116070 Scanner template
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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High 8.2
WireGuard peer endpoint learned from unauthenticated transport-data messages allows off-path tunnel hijack in Zephyr
The WireGuard VPN service in subsys/net/lib/wireguard/wg.c updated the peer endpoint from a message it could not authenticate. In handle_transport_data(), when the 32-bit receiver index of an incoming transport-data message matched no session, the code both s…
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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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Critical 9.8
Unauthenticated SSRF and local file inclusion via DownloadTaskEndpoint WebSocket in Goobi viewer
The Goobi viewer is a web application that allows digitised material to be displayed in a web browser. From version 24.03 to before version 26.05, the DownloadTaskEndpoint WebSocket endpoint (/tasks/download/monitor.socket) in goobi-viewer-core accepts downlo…
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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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Critical 9.3
DJI CrystalSky ZS600C ships ADB without authentication (ro.adb.secure=0)
Missing authentication for a critical function in the Android Debug Bridge daemon (adbd) in DJI CrystalSky ZS600C firmware v0.3.9.7 through v0.6.6.9 allows an attacker to obtain an unauthenticated shell (uid 2000), a foothold for privilege escalation to root.…
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High 7.5
PraisonAI A2U incomplete authentication fix leaves current serve command unauthenticated by default
PraisonAI is a multi-agent teams system. From version 4.5.115 to before version 4.6.61, the published A2U advisory GHSA-f292-66h9-fpmf says unauthenticated A2U event streaming was fixed in praisonai 4.5.115. Current head still exposes the same A2U subscriptio…
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Critical 9.8
PraisonAI: AgentOS remains unauthenticated after GHSA-pm96 patched version and allows remote agent invocation
PraisonAI is a multi-agent teams system. From version 4.2.1 to before version 4.6.59, PraisonAI's AgentOS FastAPI deployment surface remains unauthenticated in current main and in releases after the published patched version for GHSA-pm96-6xpr-978x / CVE-2026…
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High 8.6
PraisonAI LinearBot processes unsigned webhooks when LINEAR_WEBHOOK_SECRET is missing
PraisonAI is a multi-agent teams system. From version 4.6.56 to before version 4.6.59, PraisonAI's LinearBot starts a public webhook listener on 0.0.0.0 and treats LINEAR_WEBHOOK_SECRET as optional. When the secret is absent, startup only logs a warning and _…
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High 8.2
PraisonAI recipe serve Typer command bypasses the non-localhost authentication guard
PraisonAI is a multi-agent teams system. From version 4.5.112 to before version 4.6.59, PraisonAI's installed console entrypoint is Typer-first. In current releases, the recipe command is registered in the Typer app and praisonai recipe serve dispatches to th…
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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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High 7.1
Missing Authentication in CGM CLININET
CGM CLININET is vulnerable to Missing Authentication for Critical Function in the /DocManagment path. The endpoint is accessible without authentication, allowing an unauthenticated attacker in the adjacent network to retrieve the list of patient documents and…
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High 7.2
Cross-Site WebSocket Hijacking and Permissive CORS in Google Agent Development Kit (ADK) for Java Development Server
Missing Origin Validation in WebSockets (CWE-1385) and Permissive Cross-domain Policy with Untrusted Domains (CWE-942) in the development web server (ADK Web) in Google Agent Development Kit (ADK) for Java (com.google.adk:google-adk-dev versions 0.1.0 before …
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Critical 9.3
Authentication Bypass Leading to Server-Side Command Execution
An authentication bypass vulnerability in the public onPhase/ frevvo registration form version 11.0.14 allows an unauthenticated remote attacker to authenticate as an arbitrary tenant user, obtain TenantAdmin and Designer privileges, and execute arbitrary ope…
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High 7.5
Kiloview E3 NDI Encoder Missing Authentication for Critical Function
The ONVIF device service on affected Kiloview E3 NDI encoder firmware accepts hostname, DNS, and NTP configuration write operations without requiring authentication, regardless of the device's configured authentication setting for this service. A remote, unau…
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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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Critical 10.0
Azure Kubernetes Configuration Service Elevation of Privilege Vulnerability
Missing authentication for critical function in Azure Kubernetes Configuration Service allows an unauthorized attacker to elevate privileges over a network.
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High 8.1
Authentication Bypass in Web Interface of AOS-8 allows Remote Command Execution (RCE)
A vulnerability in the web interface of AOS-8 could allow an unauthenticated remote attacker to achieve remote code execution. Successful exploitation could lead to complete device control, enabling interception of network traffic and potential compromise of …
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High 7.8
ABB Ability Edgenius | Missing Authentication in Edgenius AuthDB
Missing authentication for critical function vulnerability in ABB Ability Edgenius. This issue affects Ability Edgenius: through 3.2.3.0.
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High 8.7
Traefik v3.7.13 Authentication Bypass via ssl-passthrough Ingress HTTP Router
Traefik v3.7.13 before v3.7.14 contains an access-control bypass in the Kubernetes Ingress NGINX provider, where the HTTP router generated for ssl-passthrough Ingresses on non-TLS entry points never applies the Ingress's access-control annotations. Unauthenti…
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High 8.8
Unauthenticated Biscuit Credential Disclosure via GET /enroll/status in Google OSS Agent Mesh (SAM)
Missing Authentication for Critical Function (CWE-306) and Insufficiently Protected Credentials (CWE-522) in the control plane enrollment status handler (HandleEnrollStatus at GET /enroll/status in internal/controlplane/server.go) in Google OSS Agent Mesh (SA…
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High 7.3
oretnom23 php-travel-agency-system Session session.php missing authentication
A vulnerability was determined in oretnom23 php-travel-agency-system. Affected by this issue is some unknown functionality of the file admin/session.php of the component Session Handler. Executing a manipulation of the argument user_id can lead to missing aut…
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High 7.5
CVE-2026-82987
There exists a screen capture endpoint in vCast media streaming service in ViewSonic ViewBoard unknown allows a remote, unauthenticated attacker to capture and exfiltrate the current screen content via GET requests to an unauthenticated /snapshot or /screen e…
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Critical 9.0
Apache Traffic Server: tsmemcache plugin exposes the shared proxy cache over the network with no authentication
Apache Traffic Server's experimental tsmemcache plugin allows unauthenticated network read, write, and deletion of the shared proxy cache. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1…
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Critical 10.0
Apache Pulsar Manager: Missing authentication and authorization and disclosure of the Pulsar admin credential; end of life
Apache Pulsar Manager is a web console for administering Apache Pulsar clusters. It has its own user accounts and login, and it can be configured with an HTTP authentication credential, such as a token, that it uses to call the Pulsar admin API on behalf of i…
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High 8.7
Storybook dev server: devices on the same network can obtain the WebSocket token and write code into story files
Storybook is a frontend workshop for building user interface components and pages in isolation. From 8.0.0 until 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6, the Storybook development server can expose its WebSocket authentication token to clients able to load…
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High 7.3
MomoTommy file-management-system Files API FileController.php destroy missing authentication
A vulnerability was found in MomoTommy file-management-system dc9ce1bf27f94b23d906cb1e86ce374dc94ca5df. This issue affects the function index/store/update/destroy of the file app/Http/Controllers/FileController.php of the component Files API. The manipulation…
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High 7.5
D365 F&O MCP Server: Official Azure one-click deployment ships with authentication disabled by default, exposing proprietary X++ source over the public internet
D365 F&O MCP Server is a Model Context Protocol server for querying Dynamics 365 Finance & Operations X++ code and metadata. Prior to version 1.11.0, the officially documented Azure one-click deployment uses infrastructure/azuredeploy.json and infrastructure/…
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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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High 7.8
Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability
A vulnerability in the control channel socket implementation of Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user. This vulnerability is due to a lack of authent…
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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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Critical 9.1
Apache bRPC: Missing Authentication for Streaming RPC Frames
Missing authentication in the streaming RPC path of Apache bRPC (version < 1.18.0) on all platforms allows a remote attacker to bypass server authentication and inject or deliver streaming frames, when a server is configured with an Authenticator. Root Cause:…
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Critical 9.8
Apache IoTDB: Remote code execution and Unauthenticated path traversal in legacy pipe sendFile RPC
Missing authentication for critical function vulnerability in Apache IoTDB. This issue affects Apache IoTDB: from 2.0.0 before 2.0.11. Users are recommended to upgrade to version 2.0.11, which fixes the issue.
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Critical 9.8
HKUDS Vibe-Trading before 0.1.7 Missing Authentication in FastAPI Server Enabling RCE
HKUDS Vibe-Trading from 0.1.0 before 0.1.7 contains a missing authentication vulnerability that allows unauthenticated attackers to access the FastAPI surface because require_auth() returns early when API_AUTH_KEY is unset. Attackers can post messages to /ses…
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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…