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)
-
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.
-
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.
-
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.
-
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].
-
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
-
Critical 9.8
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions t…
-
Critical 9.8
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions t…
-
Critical 9.8
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions t…
-
Critical 9.8
Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that ar…
-
Critical 10.0
Vulnerability in the Oracle Data Integrator product of Oracle Fusion Middleware (component: Rest Service). Supported ve…
-
Critical 9.1
Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are …
-
Critical 9.8
Vulnerability in the Siebel CRM Development product of Oracle Siebel CRM (component: Siebel Approval Manager). Supporte…
-
Critical 9.8
PraisonAI call server exposes unauthenticated agent listing, invocation, and deletion when CALL_SERVER_TOKEN is unset
PraisonAI is a multi-agent teams system. Prior to version 4.6.40, PraisonAI's call server exposes a network-facing agent control API without authentication when `CALL_SERVER_TOKEN` is not configured. The affected component is the `praisonai.api.agent_invoke` …
-
Critical 9.8
PraisonAI `deploy --type api` emits a Flask server with authentication disabled by default
PraisonAI is a multi-agent teams system. CVE-2026-44338 (GHSA-6rmh-7xcm-cpxj) documents that PraisonAI ships a code-generator (`praisonai.deploy.api.generate_api_server_code`) that emits a Flask API server with authentication disabled by default. Users who fo…
-
Critical 9.8
PraisonAI's unauthenticated A2A official example can reach real LLM-driven `eval()` tool execution
PraisonAI is a multi-agent teams system. Prior to version 4.6.40, PraisonAI's first-party A2A server example exposes an unauthenticated A2A JSON-RPC endpoint and registers a `calculate(expression)` tool implemented with Python `eval()`. The example also binds…
-
Critical 9.4
Hypershift: konnectivity proxy-server accepts agent connections without validating client certificates
A flaw was found in the Konnectivity proxy-server configuration for hosted control planes. The agent-facing listener was started without --cluster-ca-cert (and without token-based agent authentication), so client certificates were not validated. A remote atta…
-
Critical 9.8
Authentication Bypass in Webhook Endpoints Allowed Unauthorized Flow Execution
IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configurati…
-
Critical 9.8CVE-2026-9103 Scanner template
Unauthenticated Superuser Token Issuance via Auto-Login Endpoint
IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to gain unauthorized access due to improper authentication in the /api/v1/login/auto_login endpoint. The endpoint issues long-lived superuser bearer tokens without requiring authentication wh…
-
Critical 9.8
Unauthenticated User Registration Could Lead to Remote Code Execution
IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to create unlimited user accounts on any Langflow instance; when NEW_USER_IS_ACTIVE=true (documented deployment option), newly created accounts are immediately active and can authenticate …
-
Critical 9.1
clawvet < 0.7.5 Hard-coded JWT Secret Session Forgery
clawvet self-hosted API server (apps/api) before 0.7.5 hard-codes a fallback JWT secret ('clawvet-dev-secret-change-me') in auth.ts and ships it as the default in .env.example. Because GET /api/v1/scans returns scan records containing userId values without au…
-
Critical 9.8
Grafana OnCall 1.16.11 Unauthenticated Token Hijack via Plugin Install Endpoint
Grafana OnCall through 1.16.11 contains an unauthenticated access vulnerability that allows remote attackers to obtain a valid PluginAuthToken by sending a POST request to the internal plugin install endpoint using hardcoded default stack_id and org_id values…
-
Critical 9.8CVE-2026-45695 Scanner template
Kopia: Unauthenticated RCE via SSH ProxyCommand Injection when --insecure --without-password is used
Kopia is a cross-platform backup tool for Windows, macOS, and Linux with fast incremental backups, client-side end-to-end encryption, compression, and data deduplication. Prior to 0.23.0, Kopia's HTTP server started with --without-password accepts unauthentic…
-
Critical 10.0
9Router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes
9Router is an AI router & token saver. From 0.4.30 until 0.4.37, 9Router's src/proxy.js middleware did not protect /api/cli-tools/* and /api/mcp/*, allowing unauthenticated registration of customPlugins through src/app/api/cli-tools/cowork-settings/route.js a…
-
Critical 9.1
Better Auth: OAuth refresh-token replay via missing client authentication on oidc-provider and mcp plugins
Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the legacy oidcProvider and mcp plugins expose OAuth token endpoints whose refresh_token grant authenticates only possession of the bound refreshToken row and matching…
-
Critical 9.3
ColdFusion | Missing Authentication for Critical Function (CWE-306)
ColdFusion is affected by a Missing Authentication for Critical Function vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue does not require user interaction. Scope is changed.
-
Critical 10.0
Rockwell Automation 1715 Redundant IO – Access Control Vulnerability
A security issue exists within the 1715-AENTR EtherNet/IP Adapter. The affected product exposes a network-accessible debug port that does not enforce proper privilege controls, allowing unauthenticated remote access to intrusive command-line interface (CLI) c…
-
Critical 10.0
In JetBrains YouTrack before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429 au…
-
Critical 9.1
Apache Doris: Improper Authentication in Frontend HTTP API
Certain Apache Doris FE HTTP REST administrative APIs were accessible without proper authentication. An unauthenticated attacker with network access to the FE HTTP service could perform unauthorized administrative operations, potentially affecting cluster int…
-
Critical 9.1
9Router 0.4.41 - Unauthenticated API Key Exposure via /api/usage/stats
9Router through version 0.4.41 contains an unauthenticated information disclosure vulnerability that allows remote attackers to retrieve plaintext API keys for all connected AI provider accounts by sending a single unauthenticated request to the /api/usage/st…
-
Critical 9.8CVE-2026-59801 Scanner template
9Router 0.4.41 - Unauthenticated API Exposure via /api/providers
9Router through version 0.4.41 contains an unauthenticated access vulnerability that allows remote attackers to interact with provider management API endpoints by sending requests without any credentials due to missing authentication middleware in the Next.js…
-
Critical 9.3
Unauthenticated Remote Code Execution in ThemisNETPanel
Remote Code Execution vulnerability exists in ThemisNETPanel due to missing authentication for a critical file upload function. The application exposes an endpoint that allows unauthenticated attackers to upload arbitrary PHP files by providing a base64-encod…
-
Critical 9.3
Missing authentication for webserver endpoints
The webserver running on port 8090 does not require authentication. This allows for sensitive information leakage such as configured passwords, or uploading files through different endpoints.
-
Critical 9.2
Tilt: Missing authentication on the network-exposed Tilt HUD server
Tilt defines dev environments as code for microservice apps on Kubernetes. From 0.20.8 through 0.37.3, the Tilt HUD HTTP server registers handlers on a gorilla/mux router with no authenticating middleware. When the HUD is bound to a non-loopback address, an u…
-
Critical 9.8CVE-2026-58123 Scanner template
Hermes WebUI < 0.51.788 Unauthenticated RCE via Terminal API
Hermes WebUI before 0.51.788 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary shell commands by accessing the embedded terminal API endpoints without credentials. Attackers can create a session,…
-
Critical 10.0
Ruflo: Unauthenticated RCE in MCP bridge default docker-compose deployment
Ruflo is an agent meta-harness for Claude Code and Codex. Prior to 3.16.3, ruflo's default docker-compose deployment exposed the MCP bridge POST /mcp and POST /mcp/:group endpoints without authentication, allowing an unauthenticated network attacker to invoke…
-
Critical 9.1
Dgraph Alpha group stores can be replaced via unauthenticated external snapshot import
Dgraph is an open source distributed GraphQL database. Prior to version 25.3.5, Dgraph Alpha exposes the RPCs used for external snapshot import on the public gRPC port `:9080` without authentication or authorization. As a result, an unauthenticated network cl…
-
Critical 9.8
mem0 - OpenMemory API Unauthenticated Access via Memory Endpoints
mem0's openmemory/api component contains an unauthenticated access vulnerability that allows unauthenticated attackers to read, write, and delete arbitrary user memories by accessing API routers registered without authentication middleware. Attackers can supp…
-
Critical 9.3
mem0 - Unauthenticated Config API Exposure and SSRF via ollama_base_url
mem0 contains unauthenticated config API endpoints that expose LLM API keys in plaintext and allow server-side request forgery via attacker-controlled ollama_base_url parameter. Unauthenticated attackers can retrieve stored secrets like OpenAI API keys via GE…
-
Critical 9.1
Cognee < 1.2.0 Unauthorized LLM Configuration Overwrite via /api/v1/settings
Cognee before 1.2.0 contains an improper access control vulnerability that allows unauthenticated attackers to overwrite the global LLM provider configuration by self-registering an account and calling the settings endpoint, which performs no admin or superus…
-
Critical 9.2
FOSSBilling has an unauthenticated payment bypass via IPN callback forgery
FOSSBilling is a free, open-source billing and client management system. Versions 0.6.0 through 0.7.2 have an unauthenticated payment bypass vulnerability in FOSSBilling's IPN callback endpoint. When the Custom payment adapter is enabled, an attacker can mark…
-
Critical 9.8CVE-2026-53913 Public exploit
Apache Camel Keycloak: KeycloakSecurityPolicy verifies the bearer access token only inside its role and permission checks, so in the default configuration the token is never verified and any non-null bearer value is accepted
Improper Authentication, Missing Authentication for Critical Function, Not Failing Securely ('Failing Open') vulnerability in Apache Camel Keycloak Component. The KeycloakSecurityPolicy of camel-keycloak guards a route by running KeycloakSecurityProcessor.bef…
-
Critical 9.8
Improper Access Control in TR7's WAF-ASP
Missing authentication for critical function vulnerability in TR7 Cyber Defense Inc. WAF-ASP allows Authentication Abuse. This issue affects WAF-ASP: from v1.0.324.900 before v1.4.0.117.
-
Critical 9.8
PACSgear MediaWriter 5.2.1 Unauthenticated RCE via .NET Remoting TCP Service
PACSgear MediaWriter 5.2.1 exposes a .NET Remoting TCP service on port 9000 via PacsgearMediaServerEngine.dll, registered with ObjectURIs RemoteObj and UIRemoteObj, without any authentication requirement. By exploiting the MarshalByRefObject object unmarshall…
-
Critical 9.8
PACSgear PACS Scan 5.2.1 Unauthenticated RCE via .NET Remoting TCP Service
PACSgear PACS Scan 5.2.1 contains an unauthenticated remote code execution vulnerability that allows remote attackers to read and write arbitrary files by exploiting an exposed .NET Remoting TCP service on port 22222 via PGImageExchQueue.exe without any authe…
-
Critical 9.8
Advantech｜Hospital Quering Management - Missing Authentication
Hospital Queuing Management developed by Advantech has a Sensitive Data Exposure vulnerability, allowing unauthenticated remote attackers to access a specific URL to obtain API documentation.