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
230 results · Clear filters · Feed
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High 7.1CVE-2026-34472 Public exploit
Unauthenticated credential disclosure in the wizard interface in ZTE ZXHN H188A V6.0.10P2_TE and V6.0.10P3N3_TE allows …
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High 7.3CVE-2026-5000 Public exploit
PromtEngineer localGPT API Endpoint server.py LocalGPTHandler missing authentication
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Critical 9.1
LoLLMs WEBUI has unauthenticated Server-Side Request Forgery (SSRF) in /api/proxy endpoint
LoLLMs WEBUI provides the Web user interface for Lord of Large Language and Multi modal Systems. A critical Server-Side Request Forgery (SSRF) vulnerability has been identified in all known existing versions of `lollms-webui`. The `@router.post("/api/proxy")`…
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Critical 9.3
Langflow has Unauthenticated Remote Code Execution via Public Flow Build Endpoint
Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the POST /api/v1/build_public_tmp/{flow_id}/flow endpoint allows building public flows without requiring authentication. When the optional data paramete…
KEV Mar 25, 2026 -
Critical 9.8CVE-2026-32985 Public exploit
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Xerte Online Toolkits versions 3.14 and earlier contain an unauthenticated arbitrary file upload vulnerability in the template import functionality that allows remote attackers to execute arbitrary code by uploading a crafted ZIP archive containing malicious …
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High 7.3
BMC FootPrints ITSM 20.20.02 <= 20.24.01.001 Authentication Bypass
BMC FootPrints ITSM versions 20.20.02 through 20.24.01.001 contain an authentication bypass vulnerability due to improper enforcement of security filters on restricted REST API endpoints and servlets. Unauthenticated remote attackers can bypass access control…
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Critical 10.0CVE-2026-3611 Public exploit
Honeywell IQ4x BMS Controller Missing authentication for critical function
The Honeywell IQ4x building management controller, exposes its full web-based HMI without authentication in its factory-default configuration. With no user module configured, security is disabled by design and the system operates under a System Guest (level 1…
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High 7.7
Flowise: Missing Authentication on NVIDIA NIM Endpoints
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.0.13, the NVIDIA NIM router (/api/v1/nvidia-nim/*) is whitelisted in the global authentication middleware, allowing unauthenticated access to privilege…
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Critical 9.8
Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure
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Critical 9.8CVE-2026-2624 Public exploit
Authentication Bypass in ePati's Antikor NGFW
Missing Authentication for Critical Function vulnerability in ePati Cyber Security Technologies Inc. Antikor Next Generation Firewall (NGFW) allows Authentication Bypass. This issue affects Antikor Next Generation Firewall (NGFW): from v.2.0.1298 before v.2…
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Medium 5.3CVE-2025-6792 Public exploit
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Critical 9.8
Milvus Allows Unauthenticated Access to Restful API on Metrics Port (9091) Leads to Critical System Compromise
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High 7.5CVE-2026-26235 Public exploit
JUNG Smart Visu Server 1.1.1050 - 'JUNG Smart Visu Server' Missing Authentication
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Critical 9.5
FUXA Unauthenticated Remote Code Execution via Arbitrary File Write in Upload API
FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. A path traversal vulnerability in FUXA allows an unauthenticated, remote attacker to write arbitrary files to arbitrary locations on the server filesystem. This affects FUXA through ver…
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Critical 9.5CVE-2026-25938 Public exploit
FUXA Unauthenticated Remote Code Execution in Node-RED Integration
FUXA is a web-based Process Visualization (SCADA/HMI/Dashboard) software. From 1.2.8 through 1.2.10, an authentication bypass vulnerability in FUXA allows an unauthenticated, remote attacker to execute arbitrary code on the server when the Node-RED plugin is …
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Critical 9.3
SmarterTools SmarterMail < Build 9511 Unauthenticated RCE via ConnectToHub API
SmarterTools SmarterMail versions prior to build 9511 contain an unauthenticated remote code execution vulnerability in the ConnectToHub API method. The attacker could point the SmarterMail to the malicious HTTP server, which serves the malicious OS command. …
KEV Feb 5, 2026 -
Critical 9.8
REC in MCPJam inspector due to HTTP Endpoint exposes
MCPJam inspector is the local-first development platform for MCP servers. Versions 1.4.2 and earlier are vulnerable to remote code execution (RCE) vulnerability, which allows an attacker to send a crafted HTTP request that triggers the installation of an MCP …
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Critical 9.0CVE-2025-12548 Public exploit
Github.com/che-incubator/che-code: eclipse che — unauthenticated rce and secret exfiltration via tcp/3333
A flaw was found in Eclipse Che che-machine-exec. This vulnerability allows unauthenticated remote arbitrary command execution and secret exfiltration (SSH keys, tokens, etc.) from other users' Developer Workspace containers, via an unauthenticated JSON-RPC /…
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High 8.8
OpenCode's Unauthenticated HTTP Server Allows Arbitrary Command Execution
OpenCode is an open source AI coding agent. Prior to 1.0.216, OpenCode automatically starts an unauthenticated HTTP server that allows any local process (or any website via permissive CORS) to execute arbitrary shell commands with the user's privileges. This …
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Medium 6.3CVE-2026-0842 Public exploit
Flycatcher Toys smART Sketcher Bluetooth Low Energy missing authentication
A flaw has been found in Flycatcher Toys smART Sketcher up to 2.0. This affects an unknown part of the component Bluetooth Low Energy Interface. This manipulation causes missing authentication. The attack can only be done within the local network. The exploit…
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Medium 6.8CVE-2025-65731 Public exploit
An issue was discovered in D-Link Router DIR-605L (Hardware version F1; Firmware version: V6.02CN02) allowing an attack…
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High 8.8
Langflow Missing Authentication on Critical API Endpoints
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user co…
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Critical 9.8CVE-2025-65856 Public exploit
Authentication bypass vulnerability in Xiongmai XM530 IP cameras on Firmware V5.00.R02.000807D8.10010.346624.S.ONVIF 21…
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Medium 4.2CVE-2025-67780 Public exploit
SpaceX Starlink Dish devices with firmware 2024.12.04.mr46620 (e.g., on Mini1_prod2) allow administrative actions via u…
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Medium 5.3CVE-2025-11771 Public exploit
Cryptocurrency (Token), Launchpad (Presale), ICO & IDO, Airdrop by TokenICO <= 2.4.7 - Missing Authentication to Unauthenticated Presale Update
The Cryptocurrency (Token), Launchpad (Presale), ICO & IDO, Airdrop by TokenICO plugin for WordPress is vulnerable to unauthenticated and unauthorized modification of data due to missing authentication and capability checks on the 'createSaleRecord' function …
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Medium 5.3CVE-2025-11986 Public exploit
Crypto Tool <= 2.22 - Unauthenticated Information Exposure via Global Authentication State
The Crypto plugin for WordPress is vulnerable to Information exposure in all versions up to, and including, 2.22. This is due to the plugin registering an unauthenticated AJAX action (wp_ajax_nopriv_crypto_connect_ajax_process) that allows calling the registe…
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High 7.6CVE-2025-41090 Public exploit
Improper Access Control in CCN-CERT microCLAUDIA
microCLAUDIA in v3.2.0 and prior has an improper access control vulnerability. This flaw allows an authenticated user to perform unauthorized actions on other organizations' systems by sending direct API requests. To do so, the attacker can use organization i…
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Critical 9.8
Vulnerability in the Identity Manager product of Oracle Fusion Middleware (component: REST WebServices). Supported vers…
KEV Nov 21, 2025 -
Critical 9.8CVE-2025-53072 Public exploit
Vulnerability in the Oracle Marketing product of Oracle E-Business Suite (component: Marketing Administration). Support…
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Medium 5.3CVE-2025-11171 Public exploit
Chartify – WordPress Chart Plugin <= 3.5.9 - Missing Authentication for Administrative Function
The Chartify – WordPress Chart Plugin for WordPress is vulnerable to Missing Authentication for Critical Function in all versions up to, and including, 3.5.9. This is due to the plugin registering an unauthenticated AJAX action that dispatches to admin-class …
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Critical 9.4CVE-2025-61777 Public exploit
FlagForge Allows Unauthenticated Badge Template API Access
Flag Forge is a Capture The Flag (CTF) platform. Starting in version 2.0.0 and prior to version 2.3.2, the `/api/admin/badge-templates` (GET) and `/api/admin/badge-templates/create` (POST) endpoints previously allowed access without authentication or authoriz…
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High 7.1CVE-2025-9983 Public exploit
Lack of Authentication for RTSP stream
GALAYOU G2 cameras stream video output via RTSP streams. By default these streams are protected by randomly generated credentials. However these credentials are not required to access the stream. Changing these values does not change camera's behavior. The ve…
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Critical 9.8
Flowise Cloud and Local Deployments have Unauthenticated Password Reset Token Disclosure that Leads to Account Takeover
Flowise is a drag & drop user interface to build a customized large language model flow. In version 3.0.5 and earlier, the `forgot-password` endpoint in Flowise returns sensitive information including a valid password reset `tempToken` without authentication …
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Critical 9.9
FOG's authentication bypass leads to full SQL DB dump
FOG is a free open-source cloning/imaging/rescue suite/inventory management system. Versions 1.5.10.1673 and below contain an authentication bypass vulnerability. It is possible for an attacker to perform an unauthenticated DB dump where they could pull a ful…
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High 8.7CVE-2012-10062 Public exploit
XAMPP WebDAV PHP Upload Authentication Bypass RCE
A vulnerability in XAMPP, developed by Apache Friends, version 1.7.3's default WebDAV configuration allows remote authenticated attackers to upload and execute arbitrary PHP code. The WebDAV service, accessible via /webdav/, accepts HTTP PUT requests using de…
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Critical 9.8CVE-2022-43110 Public exploit
Voltronic Power ViewPower through 1.04-21353 and PowerShield Netguard before 1.04-23292 allows a remote attacker to con…
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Critical 9.8
Unsupervised OS command execution leads to remote code execution by unauthenticated network attackers
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Critical 10.0CVE-2011-10013 Public exploit
Traq 2.0–2.3 admincp/common.php RCE
Traq versions 2.0 through 2.3 contain a remote code execution vulnerability in the admincp/common.php script. The flawed authorization logic fails to halt execution after a failed access check, allowing unauthenticated users to reach admin-only functionality.…
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Critical 9.8CVE-2025-5095 Public exploit
Burk Technology ARC Solo Missing Authentication for Critical Function
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Critical 9.3CVE-2012-10030 Public exploit
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FreeFloat FTP Server contains multiple critical design flaws that allow unauthenticated remote attackers to upload arbitrary files to sensitive system directories. The server accepts empty credentials, defaults user access to the root of the C:\ drive, and im…