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
1,260 results · Clear filters · Feed
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High 7.5
Foxel through 2.4.0 Unauthenticated File Read via /api/fs/stream and /api/fs/thumb
Foxel through 2.4.0 contains a missing authentication vulnerability that allows unauthenticated attackers to read files by requesting the /api/fs/stream and /api/fs/thumb endpoints. Attackers can supply a VFS mount prefix and relative path to retrieve full fi…
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High 7.5
Munshi Payment Bypass via Unauthenticated Webhook Endpoint
Munshi (by Petpooja) before 2026-06-30 contained a payment bypass vulnerability in its subscription payment webhook at POST /api/payment/order/webhook, which lacks webhook authentication, cryptographic signature verification, source validation, and independen…
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High 7.2
Privilege escalation in downstream clusters via GlobalRole inheritedNamespacedRules
A privilege escalation issue was discovered in Rancher Manager's role-based access control. The inheritedNamespacedRules field of a GlobalRole propagates permissions into named namespaces of every downstream cluster managed by the Rancher instance, but it was…
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High 7.8
Control Web Panel (CWP) < 1.29 Unauthenticated Loopback API Root Access
Control Web Panel (CWP) before webpanel_version 1.29 contains a missing authentication vulnerability that allows attackers able to reach the loopback API service to invoke root-privileged API routes without presenting an access token. Attackers can access end…
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High 7.3
Network-AI 5.14.0 before 5.15.5 Missing Authentication in A2AServer Task Operations
Network-AI from 5.14.0 before 5.15.5 contains a missing authentication vulnerability in the A2AServer class that allows unauthenticated attackers to access task operations when no secret is configured. Attackers can send JSON-RPC requests to tasks/send, tasks…
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High 7.3
Presenton API missing authentication
A weakness has been identified in Presenton up to 0.9.11-beta. Affected by this issue is some unknown functionality of the component API. This manipulation causes missing authentication. It is possible to initiate the attack remotely. The exploit has been mad…
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High 8.7
Coop has a data leak via unauthenticated GraphQL Query.allOrgs
Coop is an open source review and moderation tool from ROOST. Prior to 1.0.0, an unauthenticated actor can query `Query.allOrgs` through `/api/v1/graphql` on a publicly accessible deployment and obtain data for all organizations, including organization IDs, n…
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High 8.7
MyTube: Unauthenticated Media Access via Static Routes Bypassing Login
MyTube is a self-hosted downloader and player for several video websites. Prior to version 1.10.3, `server.ts` calls `registerStaticRoutes` and `registerCloudRoutes` before `registerApiRoutes`, where `authMiddleware` and `roleBasedAuthMiddleware` are mounted.…
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High 7.5
PDF Reader MCP: HTTP transport accepts unauthenticated requests despite a configured MCP_API_KEY
PDF Reader MCP is a Model Context Protocol server for reading PDF documents. In versions 2.2.0 and later prior to 3.0.1, when `MCP_TRANSPORT=http` enables the opt-in HTTP server, `@sylphx/pdf-reader-mcp` reads `MCP_API_KEY` and logs that `X-API-Key` authentic…
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High 8.7
Missing authentication check on POST/PUT requests
The web server does not check authentication on POST or PUT. An unauthenticated attacker can reboot the charger; by brute-forcing the configid, they can also set the service password and then change any setting.
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High 8.7CVE-2026-92744 Public exploit
Delinea Privilege Manager agent unauthenticated remote code execution vulnerability
Under certain conditions, privilege manager agent allows a remote unauthenticated attacker to execute arbitrary code as LocalSystem.
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High 8.6
The Ortto plugin for WordPress before 1.0.25 did not authenticate configuration update requests, relying only on a secr…
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High 7.3
AVideo-Encoder: missing authentication on control and status endpoints
AVideo is a video-sharing Platform. Prior to 8.1.0, the encoder lacks a global authentication layer and exposes control and status PHP endpoints to anonymous network callers. `view/run.php` has a commented-out guard and invokes `Encoder::run()`. `view/queue.j…
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High 8.6
Gearboy advisory / Gearsystem body: Unauthenticated network exposure of MCP HTTP tools
Gearboy is a Game Boy, Game Boy Color, and Super Game Boy emulator and debugger with an embedded MCP server. Gearsystem, the affected component, has an optional `--mcp-http` mode that accepts unauthenticated MCP requests from any reachable network peer despit…
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High 8.7
Fireware OS Missing Authentication in FireCluster Sync Allows Privilege Escalation
A missing authentication vulnerability in the FireCluster Sync processing allows an attacker positioned on the cluster interconnect, such as a compromised cluster peer or an on-path network attacker, to invoke privileged firewall management actions as root by…
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High 7.5
3Dviewer-Nextcloud: Share password not enforced when streaming 3D models from a public link share
The 3D Viewer for Nextcloud is a comprehensive 3D model viewer application for Nextcloud that supports multiple 3D file formats. In versions 1.7.9 through 3.3.1, the app's public file endpoint performed no share authorization. Anyone who knows a share token c…
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High 8.7
TRO600 contains an arbitrary file read vulnerability. An unauthenticated attacker can exploit this vulnerability to rea…
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High 8.7
Missing Authentication in Default Configuration in boneIO
boneIO Black firmware ships with authentication disabled by default. Its management web API listens on all network interfaces and exposes all endpoints without requiring credentials. An unauthenticated remote attacker can fully control the device, causing den…
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High 8.7
Missing Authentication for Node-RED in boneIO
boneIO Black exposes a Node-RED instance without authentication at the /nodered/ path through a Caddy reverse proxy. The Node-RED Admin API allows deploying flows that can execute arbitrary system commands. An unauthenticated attacker on the local network can…
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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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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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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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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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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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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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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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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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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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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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High 7.1
Trigger.dev CLI 3.0.0 before 4.5.4 Missing Authentication in MCP Server
Trigger.dev cli-v3 from 3.0.0 before 4.5.4 contains a missing authentication vulnerability in the trigger dev --mcp server, which binds all network interfaces and exposes the /sse and /messages endpoints. LAN attackers or malicious web pages can send MCP tool…
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High 7.9
Trigger.dev through 4.7.6 Missing Authentication in Supervisor Workload API
Trigger.dev through 4.7.6 contains a missing authentication vulnerability in the supervisor workload server that allows workloads to manipulate runs belonging to other deployments without ownership verification. Attackers with network access and a valid run/s…