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
669 results · Clear filters · Feed
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Medium 5.3CVE-2026-100903 Public exploit
ООО НПО Ритм GEOritm REST API obj-groups missing authentication
A vulnerability was identified in ООО НПО Ритм GEOritm up to 2.45.1. This affects an unknown part of the file /restapi/objects/obj-groups of the component REST API. Such manipulation of the argument objectId leads to missing authentication. The attack can be …
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Medium 6.3
mathurvishal CloudClassroom-PHP-Project loginlinkstudent.php missing authentication
A vulnerability was found in mathurvishal CloudClassroom-PHP-Project up to 5dadec098bfbbf3300d60c3494db3fb95b66e7be. Affected is an unknown function of the file loginlinkstudent.php. Performing a manipulation of the argument umail results in missing authentic…
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Medium 6.5
X-SpringBoot through 6.0 Credential Exposure via Unauthenticated Endpoint
X-SpringBoot through 6.0 exposes appKey and appSecret credentials in the GET /application/manager/select endpoint without authentication or field filtering. Unauthenticated attackers can retrieve these credentials and use them to send arbitrary SMS messages t…
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Medium 5.3
zhistaredu StarTraining api-docs Endpoint SecurityConfig.java missing authentication
A security flaw has been discovered in zhistaredu StarTraining up to 3.8.1. The affected element is an unknown function of the file SecurityConfig.java of the component api-docs Endpoint. Performing a manipulation results in missing authentication. It is poss…
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Medium 5.3
GibbonEdu Gibbon Unit Planner units_add_blockAjax.php makeBlock missing authentication
A vulnerability has been found in GibbonEdu Gibbon up to 30.0.01. The affected element is the function makeBlock of the file modules/Planner/units_add_blockAjax.php of the component Unit Planner. The manipulation of the argument gibbonUnitBlockID/mode leads t…
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Medium 6.2
Botslab G980H Dashcams Missing Authentication for Critical Function
The Botslab G980H dash camera firmware does not require authenticated pairing or client binding before permitting access to Bluetooth Low Energy communications and GATT characteristics. An unauthenticated attacker within Bluetooth range could intercept or dir…
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Medium 6.8
Botslab G980H Dashcams Missing Authentication for Critical Function
The Botslab G980H dash camera firmware contains an authentication vulnerability in the root account exposed through the device's UART interface. The affected account does not require a password before granting access to a privileged system interface, and the …
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Medium 6.2
IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
IBM Financial Transaction Manager (FTM) for RedHat OpenShift is vulnerable to missing authentication on the Business Rules Manager commands REST endpoint (`CommandsResource.java:31`). A local actor can invoke unauthenticated commands to cause resource exhaust…
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Medium 6.1
MQTT WebSocket Command Execution Vulnerability in NitroSense
An unauthenticated local attacker can connect to the MQTT broker over its localhost WebSocket endpoint in Acer NitroSense software (versions up to and including 5.2.62). This allows the attacker to invoke exposed ddsc RPC functions, including child_process.ex…
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Medium 5.3
Omega Solution HRM OS Role Permission API permission missing authentication
A weakness has been identified in Omega Solution HRM OS up to 20260717. This affects an unknown function of the file /role-permission/permission of the component Role Permission API. Executing a manipulation of the argument roleId can lead to missing authenti…
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Medium 6.9
WatchDog Antivirus kernel driver arbitrary file deletion via unauthenticated IOCTL
Missing Authorization in the IOCTL handlers of the wsdkd.sys kernel drivers in Watchdog WatchDog Antivirus 1.8.640 (driver versions 1.3.0.0 and earlier) on Microsoft Windows allows local, low-privileged attackers to delete arbitrary files with SYSTEM privileg…
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Medium 5.3
NginxProxyManager nginx-proxy-manager Validate Route certificate.js internalCertificate.validate missing authentication
A vulnerability was detected in NginxProxyManager nginx-proxy-manager up to 2.15.1. This impacts the function internalCertificate.validate of the file backend/internal/certificate.js of the component Validate Route. The manipulation results in missing authent…
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Medium 4.3
Pixelfed OAuth Scope ApiV1Controller.php instancePeers missing authentication
A vulnerability was identified in Pixelfed up to 0.12.11. Impacted is the function instancePeers of the file app/Http/Controllers/Api/ApiV1Controller.php of the component OAuth Scope Handler. Such manipulation of the argument ID leads to missing authenticatio…
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Medium 5.0
CordysCRM: Unauthenticated arbitrary file disclosure via `/attachment/preview/{id}` and `/pic/preview/{id}`
CordysCRM is an open source AI-powered customer relationship management system that supports private deployment. Prior to 1.7.4, ShiroFilter configures /attachment/preview/{id} and /pic/preview/{id} as anonymous, and both routes call AttachmentService.getReso…
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Medium 5.3
IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
IBM WebSphere Application Server 9.0 and 8.5 is affected by an authentication bypass vulnerability in the SOAP/JMX connector.
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Medium 5.1
Process Compose: Browser DNS rebinding lets websites control local process-compose MCP tools
Process Compose is a scheduler and orchestrator for non-containerized applications. Prior to 1.120.0, the MCP SSE listener in src/mcp/server.go accepts browser-origin requests to /sse and the returned message endpoint without validating the Host header, valid…
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Medium 5.3
BMCtest exposes Ironic without authentication and TLS during the test
In BMCtest, Ironic is started without authentication and TLS for the duration of the test. Exploiting the problem requires winning the race with bmctest itself, which reduces the attack window and significantly increases its complexity.
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Medium 4.0
Dell OpenManage Server Administrator, versions prior to 11.1.0.3, contains a Missing Authentication for Critical Functi…
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Medium 4.9
Unauthenticated Access Vulnerability in NitroSense and PredatorSense Software
A vulnerability has been identified in the Acer Agent Service component included with NitroSense and PredatorSense. The socket handshake process does not properly require authentication before granting access to the service. Under certain circumstances, an un…
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Medium 6.5
TCH QRing R20_B006 Unauthenticated BLE Access
TCH QRing smart ring model R20_B006 running firmware RT09R20_1.00.00_250318 contains an unauthenticated Bluetooth Low Energy access vulnerability that allows any nearby attacker to connect to the device without pairing, authentication, or user approval by exp…
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Medium 5.3
Cisco Identity Services Engine Certificate Reload Vulnerability
A vulnerability in the Online Certificate Status Protocol (OCSP) responder of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to cause an administrative reload of the OCSP responder certificate and key material. This vulnerability …
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Medium 5.3
Cisco Identity Services Engine Information Disclosure Vulnerability
A vulnerability in an internal service of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to retrieve sensitive configuration information from an affected device. This vulnerability is due to missing authentication on the Policy Ru…
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Medium 5.3
Cisco Identity Services Engine Event Injection Vulnerability
A vulnerability in the endpoint posture status reporting functionality of the guest portal web application of Cisco ISE could allow an unauthenticated, remote attacker to submit forged posture status events into the endpoint posture pipeline. This vulnerabili…
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Medium 6.5
Missing Authentication for Critical Function in Digital Watchdog VMAX DVR and NVR Product Lineups
The affected products are vulnerable to an authentication bypass that allows unauthenticated remote attackers to disclose sensitive device information, including administrator credentials in plaintext, by sending crafted HTTP(S) requests.
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Medium 6.5
miniOrange JWT Authentication for WP REST APIs < 4.8.0 Authentication Downgrade
miniOrange JWT Authentication for WP REST APIs plugin for WordPress before 4.8.0 contains an authentication method downgrade vulnerability that allows unauthenticated attackers to bypass administrator-configured authentication by supplying a specific GET para…
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Medium 5.9
Unauthenticated Sensitive Information Disclosure in HPE Networking EdgeConnect SD-WAN Gateways
A vulnerability in the API endpoint of HPE Networking EdgeConnect SD-WAN Gateways could allow an unauthenticated remote attacker to access sensitive information. Successful exploitation could allow an attacker to retrieve information which could be used to po…
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Medium 5.4
Missing Authentication for Critical Function in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.6 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an authenticated user to bypass SAML SSO sign-in restrictions and authen…
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Medium 5.3
stamparm maltrail Blacklist Endpoint httpd.py _blacklist missing authentication
A weakness has been identified in stamparm maltrail up to 3.0.1. This vulnerability affects the function _blacklist of the file core/httpd.py of the component Blacklist Endpoint. Executing a manipulation can lead to missing authentication. The attack can be l…
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Medium 4.2
Langflow is vulnerable to authentication bypass and insufficient session expiration
IBM Langflow OSS 1.0.0 through 1.11.5 could allow an authenticated attacker to access another user's MCP server context due to improper cache key isolation in the MCP Tools component.
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Medium 5.7
Skipper routesrv-no-auth: All routesrv API Endpoints Lack Authentication
Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.27.13, the routesrv component serves cluster-wide control-plane data without application-layer authentication through /routes, /routes/{zone}, /swarm/redis/shards, and /swarm/valk…
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Medium 6.8
dbt-mcp: Unauthenticated OAuth Context Endpoint Leaks dbt Platform Tokens
dbt-mcp is a Model Context Protocol server for interacting with dbt. Prior to 1.20.0, the local OAuth helper in src/dbt_mcp/oauth/fastapi_app.py exposes GET /dbt_platform_context without authentication or Host validation after a user completes the dbt Platfor…
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Medium 4.3
PraisonAI: Unauthenticated Event Injection via SSE `/publish` Endpoint
PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, the SSE server in src/praisonai-agents/praisonaiagents/server/server.py does not consult ServerConfig.auth_token before handling /publish, /events, or /info requests. A network client t…
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Medium 6.5
Missing authentication for critical function vulnerability exists in Remote I/O Coupler Unit (Server Type) CPSN-MCB271-…
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Medium 6.5
simalexan api-lambda-send-email-ses API Gateway Endpoint template.yml SES.sendEmail missing authentication
A flaw has been found in simalexan api-lambda-send-email-ses up to bda6869aa81371d1e872242e74fe7d953edb818d. This issue affects the function SES.sendEmail of the file template.yml of the component API Gateway Endpoint. This manipulation of the argument toEmai…
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Medium 5.3
WWBN AVideo Missing Authentication via socketMessageLiveOwner.json.php
WWBN AVideo at commit c3edcc274c389816d434acadac07ee78eaf330c1 and earlier, with the Live plugin enabled, contains a missing authentication vulnerability in plugin/Live/socketMessageLiveOwner.json.php. The script reads the `key` and `msg` parameters from $_RE…
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Medium 6.5
Missing Authentication for Critical Function in Malcolm
When a particular authentication mode is configured, the reverse proxy forwards requests for a bundled third-party administrative interface directly to that interface without applying the gateway's own authentication requirement first. All access control for …
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Medium 6.9
Mousehole: Unauthenticated HTTP/WebSocket boundary exposes and mutates MAM cookie state
Mousehole is a background service to update a seedbox IP for MAM and web app to manage it. Prior to version 0.4.05, Mousehole's HTTP/WebSocket management boundary is reachable without application-layer authentication or browser/LAN provenance checks. The serv…
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Medium 5.3
MoguBlog through 6.2 Missing Authentication on the Comment Email-Notification Endpoint
MoguBlog through 6.2 fails to authenticate requests to the /web/comment/closeEmailNotification endpoint, allowing unauthenticated attackers to disable email notifications for arbitrary users. Remote callers can modify the startEmailNotification flag in Redis …
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Medium 6.5
MoguBlog through 6.2 Missing Authentication for Elasticsearch Index Management Endpoints
MoguBlog through 6.2 exposes Elasticsearch index management endpoints in the mogu_search service without authentication, allowing remote attackers to delete, recreate, or alter the blog search index. Attackers can invoke POST endpoints to wipe the entire sear…
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Medium 6.5
IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specially-crafted HTTP request to an administrative endpoint. A remote attacker could exploit this vulnerability to cause the server to exhaust filesystem …