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
1,266 results · Clear filters · Feed
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High 7.5
Vexa's unauthenticated internal transcript endpoint exposed by default
Vexa is an open-source, self-hostable meeting bot API and meeting transcription API. Prior to 0.10.0-260419-1910, the Vexa transcription-collector service exposes an internal endpoint `GET /internal/transcripts/{meeting_id}` that returns transcript data for a…
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High 8.8
Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, LTS2025 release version 8.3.1.0 through 8.3.1.20, LTS2024 …
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High 7.3
TransformerOptimus SuperAGI Vector Database Management Endpoint vector_dbs.py get_vector_db_details missing authentication
A flaw has been found in TransformerOptimus SuperAGI up to 0.0.14. Affected by this issue is the function get_vector_db_details of the file superagi/controllers/vector_dbs.py of the component Vector Database Management Endpoint. Executing a manipulation can l…
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High 7.3
liangliangyy DjangoBlog logtracks Endpoint views.py missing authentication
A vulnerability was identified in liangliangyy DjangoBlog up to 2.1.0.0. The impacted element is an unknown function of the file owntracks/views.py of the component logtracks Endpoint. The manipulation leads to missing authentication. The attack can be initia…
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High 7.5
Anviz Products Missing Authentication for Critical Function
Anviz CX2 Lite and CX7 are vulnerable to unauthenticated POST requests that modify debug settings (e.g., enabling SSH), allowing unauthorized state changes that can facilitate later compromise.
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High 8.3
Paperclip: Unauthenticated Access to Multiple API Endpoints in Authenticated Mode
## Summary Several API endpoints in `authenticated` mode have no authentication at all. They respond to completely unauthenticated requests with sensitive data or allow state-changing operations. No account, no session, no API key needed. Verified against the…
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High 8.8
Simopro Technology｜WinMatrix - Missing Authentication
WinMatrix agent developed by Simopro Technology has a Missing Authentication vulnerability, allowing authenticated local attackers to execute arbitrary code with SYSTEM privileges on the local machine as well as on all hosts within the environment where the a…
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High 8.6CVE-2026-34160 Public exploit
Chamilo LMS: Unauthenticated SSRF via PENS Plugin allows attacker to probe internal network and reach cloud metadata services
Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, the PENS (Package Exchange Notification Services) plugin endpoint at public/plugin/Pens/pens.php is accessible without authentication and accepts a user-controlled pack…
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High 7.2CVE-2026-33715 Public exploit
Chamilo LMS has Unauthenticated SSRF and Open Email Relay via install.ajax.php test_mailer action
Chamilo LMS is an open-source learning management system. In version 2.0-RC.2, the file public/main/inc/ajax/install.ajax.php is accessible without authentication on fully installed instances because, unlike other AJAX endpoints, it does not include the globa…
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High 7.8
Remote Desktop Licensing Service Elevation of Privilege Vulnerability
Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an authorized attacker to elevate privileges locally.
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High 7.8
Remote Desktop Licensing Service Elevation of Privilege Vulnerability
Missing authentication for critical function in Windows Remote Desktop Licensing Service allows an authorized attacker to elevate privileges locally.
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High 7.3
zhayujie chatgpt-on-wechat CowAgent Agent Mode Service missing authentication
A vulnerability was detected in zhayujie chatgpt-on-wechat CowAgent up to 2.0.4. This affects an unknown function of the component Agent Mode Service. Performing a manipulation results in missing authentication. The attack can be initiated remotely. The explo…
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High 7.3
zhayujie chatgpt-on-wechat CowAgent Administrative HTTP Endpoint missing authentication
A weakness has been identified in zhayujie chatgpt-on-wechat CowAgent 2.0.4. The affected element is an unknown function of the component Administrative HTTP Endpoint. This manipulation causes missing authentication. It is possible to initiate the attack remo…
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High 8.2
n8n-mcp has unauthenticated session termination and information disclosure in HTTP transport
### Summary Several HTTP transport endpoints in n8n-mcp lacked proper authentication, and the health check endpoint exposed sensitive operational metadata without credentials. ### Impact An unauthenticated attacker with network access to the n8n-mcp HTTP serv…
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High 8.7
Security Misconfiguration Vulnerability in Atom 3x Projector
This vulnerability exists in the Atom 3x Projector due to improper exposure of the Android Debug Bridge (ADB) service over the local network without authentication or access controls. An unauthenticated attacker on the same network can exploit this vulnerabil…
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High 7.8
Junos OS Evolved: Local, authenticated attacker can gain privileged access to FPCs
A Missing Authentication for Critical Function vulnerability in the Flexible PIC Concentrators (FPCs) of Juniper Networks Junos OS Evolved on PTX Series allows a local, authenticated attacker with low privileges to gain direct access to FPCs installed in the …
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High 7.9
PraisonAI has an Unauthenticated Allow-List Manipulation Bypasses Agent Tool Approval Safety Controls
PraisonAI is a multi-agent teams system. Prior to 4.5.128, the gateway's /api/approval/allow-list endpoint permits unauthenticated modification of the tool approval allowlist when no auth_token is configured (the default). By adding dangerous tool names (e.g.…
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High 8.6
GPL Odorizers GPL750 Missing Authentication for Critical Function
A low-privileged remote attacker can send Modbus packets to manipulate register values that are inputs to the odorant injection logic such that too much or too little odorant is injected into a gas line.
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High 8.2
kcp's cache server is accessible without authentication or authorization checks
kcp is a Kubernetes-like control plane for form-factors and use-cases beyond Kubernetes and container workloads. Prior to 0.30.3 and 0.29.3, the cache server is directly exposed by the root shard and has no authentication or authorization in place. This allow…
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High 8.1
Post-Installation Re-entry via Cache-Dependent Install Guard Bypass in ci4ms
CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to 0.31.4.0, the install route guard in ci4ms relies solely on a volatile cache check (cache('settings')) combi…
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High 8.2
Vite Affected by Arbitrary File Read via Vite Dev Server WebSocket
Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, if it is possible to connect to the Vite dev server’s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite…
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High 7.5
Authentication bypass in strawberry-graphql via legacy graphql-ws WebSocket subprotocol
Strawberry GraphQL is a library for creating GraphQL APIs. Strawberry up until version 0.312.3 is vulnerable to an authentication bypass on WebSocket subscription endpoints. The legacy graphql-ws subprotocol handler does not verify that a connection_init hand…
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High 7.3
Totolink A8000R cstecgi.cgi setLanguageCfg missing authentication
A vulnerability was identified in Totolink A8000R 5.9c.681_B20180413. This issue affects the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument langType leads to missing authentication. The attack can be launched remot…
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High 7.5
GLPI has an Unauthenticated Stored XSS via inventory
GLPI is a free asset and IT management software package. From 11.0.0 to before 11.0.6, an unauthenticated user can store an XSS payload through the inventory endpoint. This vulnerability is fixed in 11.0.6.
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High 7.3
assafelovic gpt-researcher HTTP REST API Endpoint missing authentication
A vulnerability was found in assafelovic gpt-researcher up to 3.4.3. This impacts an unknown function of the component HTTP REST API Endpoint. Performing a manipulation results in missing authentication. It is possible to initiate the attack remotely. The exp…
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High 7.3
JeecgBoot AI Chat JeecgBizToolsProvider.java missing authentication
A security vulnerability has been detected in JeecgBoot 3.9.0/3.9.1. The impacted element is an unknown function of the file jeecg-boot/jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/airag/JeecgBizToolsProvider.java of the component AI C…
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High 8.1
CVE-2026-4272 - Bluetooth Remote Execution of System Commands Vulnerability
Missing Authentication for Critical Function vulnerability in Honeywell Handheld Scanners allows Authentication Abuse.This issue affects Handheld Scanners: from C1 Base(Ingenic x1000) before GK000432BAA, from D1 Base(Ingenic x1600) before HE000085BAA, from A1…
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High 7.5
Core FTP 2.0 build 653 PBSZ Unauthenticated Denial of Service
Core FTP 2.0 build 653 contains a denial of service vulnerability in the PBSZ command that allows unauthenticated attackers to crash the service by sending a malformed command with an oversized buffer. Attackers can send a PBSZ command with a payload exceedin…
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High 8.2
C4G BLIS 3.4 SQL Injection via users_select.php
C4G Basic Laboratory Information System 3.4 contains multiple SQL injection vulnerabilities that allow unauthenticated attackers to execute arbitrary SQL commands by injecting malicious code through the site parameter. Attackers can send GET requests to the u…
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High 7.5
Wikipedia 12.0 Denial of Service via Search
Wikipedia 12.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting oversized input through the search functionality. Attackers can paste a large buffer of repeated characters into the search …
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High 7.5
VPN Browser+ 1.1.0.0 Denial of Service
VPN Browser+ 1.1.0.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting oversized input through the search functionality. Attackers can paste a large buffer of characters into the search bar…
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High 7.5CVE-2026-32646 Public exploit
Gardyn Cloud API Missing Authentication for Critical Function
A specific administrative endpoint is accessible without proper authentication, exposing device management functions.
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High 8.6
HiOS Switch Platform Denial-of-Service via Web Interface
HiOS Switch Platform versions 09.1.00 through 09.4.04 and 10.0.00 through 10.3.00 contain a denial-of-service vulnerability in the web interface that allows remote attackers to reboot the affected device by sending a malicious HTTP GET request to a specific e…
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High 7.3
vanna-ai vanna Chat API Endpoint v2 missing authentication
A vulnerability was detected in vanna-ai vanna up to 2.0.2. Affected by this vulnerability is an unknown functionality of the file /api/vanna/v2/ of the component Chat API Endpoint. Performing a manipulation results in missing authentication. The attack can b…
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High 8.3
cronmaster: Middleware authentication bypass enabling unauthorized page access and server-action execution
Cr*nMaster (cronmaster) is a Cronjob management UI with human readable syntax, live logging and log history for cronjobs. Prior to version 2.2.0, an authentication bypass in middleware allows unauthenticated requests with an invalid session cookie to be treat…
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High 7.5
AVideo: Unauthenticated Live Stream Termination via RTMP Callback on_publish_done.php
WWBN AVideo is an open source video platform. In versions 26.0 and prior, the AVideo on_publish_done.php endpoint in the Live plugin allows unauthenticated users to terminate any active live stream. The endpoint processes RTMP callback events to mark streams …
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High 7.7CVE-2026-34200 Public exploit
Nhost CLI MCP Server: Missing Inbound Authentication on Explicitly Bound Network Port
Nhost is an open source Firebase alternative with GraphQL. Prior to version 1.41.0, The Nhost CLI MCP server, when explicitly configured to listen on a network port, applies no inbound authentication and does not enforce strict CORS. This allows a malicious w…
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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
A vulnerability was detected in PromtEngineer localGPT up to 4d41c7d1713b16b216d8e062e51a5dd88b20b054. Impacted is the function LocalGPTHandler of the file backend/server.py of the component API Endpoint. The manipulation of the argument BaseHTTPRequestHandle…
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High 8.4
SIPP 3.3 Stack-Based Buffer Overflow via Configuration File
SIPP 3.3 contains a stack-based buffer overflow vulnerability that allows local unauthenticated attackers to execute arbitrary code by supplying malicious input in the configuration file. Attackers can craft a configuration file with oversized values that ove…