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
3,165 results · Feed
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Critical 9.8CVE-2026-105192 Public exploit
LMCache Unauthenticated RCE in multiprocess mode via pickle deserialization
LMCache multiprocess mode, also called distributed mode, opens an unauthenticated ZeroMQ ROUTER so worker processes can register and share KV cache blocks. Messages on that socket are msgpack. Extension code 1 is passed to DeviceIPCWrapper.Deserialize, which …
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Critical 9.8
The websocket handler of Fanvil x7a firmware version 2.6.0.1182 does not enforce proper authentication restrictions aga…
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Critical 9.1
The websocket handler of Fanvil x7a firmware version 2.6.0.1182 does not enforce proper authentication restrictions aga…
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Critical 9.8
Security Advisory 0190
An access-control flaw in the CV-CUE backend may allow an unauthenticated network attacker to access functionality intended only for internal services. Successful exploitation may expose sensitive location information or disrupt affected services.
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Medium 5.3
Authentication Bypass in the API Interface Allows Unauthorized Information Disclosure in ClearPass Policy Manager
A vulnerability in an API interface of ClearPass Policy Manager could allow an unauthenticated remote attacker to circumvent existing authentication controls. Successful exploitation could allow an attacker to obtain sensitive information from the affected sy…
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Critical 9.8
CVE-2026-106511
MultiversX's multisig-improved (repository: mx-multisig-and-modules) reference implementation of their on-chain multisig smart contract system contains a vulnerability where a missing independent authorization check allows any account with the Proposer role t…
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Medium 5.4
Dell Container Storage Modules, versions prior to 1.18.0, contain(s) a Missing Authentication for Critical Function vul…
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High 7.1
Dell Container Storage Modules (CSM), versions prior to 1.18.0, contains a Missing Authentication for Critical Function…
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Critical 10.0
Dell Container Storage Modules, versions prior to 1.18.0, contain(s) a Missing Authentication for Critical Function vul…
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Critical 10.0
Dell Container Storage Modules (CSM), versions prior to v1.18.0, contains a Missing Authentication for Critical Functio…
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High 8.2
Mooncake Store through 0.3.13.post1 Unauthenticated Object Deletion via Remove RPCs
Mooncake Store master through 0.3.13.post1 contains a missing authentication vulnerability that allows unauthenticated attackers to force-delete any object via Remove, RemoveByRegex, RemoveAll and BatchRemove on the coro_rpc port. Attackers can send forged re…
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Critical 9.8
Mooncake through 0.3.13.post1 Missing Authentication in Store REST Service
Mooncake through 0.3.13.post1 contains a missing authentication vulnerability in the Store REST service, which binds to 0.0.0.0 without authentication on any route. Unauthenticated attackers can call routes such as /api/get, /api/put, /api/remove_all and /api…
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Critical 9.8
Missing authentication for critical function in the aas-edge-client REST API
An unauthenticated remote attacker can modify Asset Administration Shell submodel data via PATCH requests and can read all data exposed by the GET endpoints.
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High 7.3
OSSRS srs System API api.go systemAPI.Run missing authentication
A vulnerability was detected in OSSRS srs up to 7.0-a1. This affects the function systemAPI.Run of the file internal/proxy/api.go of the component System API. Performing a manipulation results in missing authentication. It is possible to initiate the attack r…
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High 8.5
Joplin: Unauthenticated account takeover via an attacker-chosen application-authorisation identifier
Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.13, packages/server/src/models/ApplicationModel.ts accepts a caller-chosen application authorization identifier, applications/:id/confirm bi…
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Medium 5.4
Maestro: maestro: grpc broker has no auth interceptor and client mtls is optional
A flaw was found in the maestro gRPC broker. This vulnerability allows a remote attacker, with a valid client certificate, to bypass authentication. This bypass enables the attacker to subscribe to other consumers' event streams, leading to unauthorized infor…
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Medium 6.5
Maestro: maestro: rest api write endpoints registered without authentication middleware
A flaw was found in Maestro. Its REST API write endpoints were registered without proper authentication middleware. This allows a remote attacker to perform unauthorized write operations, such as creating, modifying, or deleting consumers and resource bundles…
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High 7.3
Casdoor API Endpoint authz_filter.go ApiFilter missing authentication
A vulnerability was detected in Casdoor up to 3.161.1. Affected is the function ApiFilter of the file routers/authz_filter.go of the component API Endpoint. Performing a manipulation results in missing authentication. The attack can be initiated remotely. The…
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High 7.3
kishor-23 food-waste-management-system Admin Signup signup.php missing authentication
A weakness has been identified in kishor-23 food-waste-management-system 411989e3ecb82895e53dca7865f72145f03d7d93/b3a70b2c492dc9904de5be1ad9389bd79b87f82c. Affected is an unknown function of the file admin/signup.php of the component Admin Signup. This manipu…
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Critical 9.8
ZITADEL before 4.17.3 Account Takeover via External IdP Linking
ZITADEL 3.0.0 through 3.4.15 and 4.0.0 before 4.17.3 creates links between user accounts and external identity providers without verifying a primary factor or the caller's permission, including on identify-only Login V2 sessions and via the User Service V2 Ad…
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High 8.6
OpenAM before 16.1.3 Unauthenticated Arbitrary Class Instantiation via JAX-RPC Interface
OpenAM before 16.1.3 contains an unauthenticated arbitrary class instantiation vulnerability in the legacy JAX-RPC SOAP interface that allows remote attackers to load classes without authentication. Attackers can send SOAP requests to /jaxrpc/* with an unveri…
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Critical 9.8CVE-2026-105105 Public exploit
Unauthenticated ZeroMQ command/telemetry bus in AIT-Core allows remote spacecraft command injection and telemetry exfiltration
CWE-306: Missing Authentication for Critical Function in the ait.core.server telemetry and command broker (ait-server) in NASA-AMMOS AIT-Core through 3.1.1 allows an unauthenticated remote attacker with network access to the ZeroMQ message bus to inject space…
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Medium 5.8
Zilliz Attu before 3.0.0 has a Playground feature that does not require authentication for proxying arbitrary HTTP and …
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Critical 9.4
Monta monta.app Missing Authentication for Critical Function
WebSocket endpoints lack proper authentication mechanisms, enabling attackers to impersonate charging stations. As a result, attackers can exploit this weakness to gain unauthorized access to sensitive data or perform unauthorized actions. Given that no authe…
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Critical 9.8
UTMStack < 11.2.16 Authentication Bypass via InternalApiKeyFilter
UTMStack before 11.2.16 contains an authentication bypass vulnerability that allows remote attackers to gain full administrative API access by presenting a valid Utm-Internal-Key header matching the INTERNAL_KEY environment variable value, which the InternalA…
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Critical 10.0
Missing authentication for critical function in Loom for AWS
Missing authentication for critical function in the authentication dependency in Loom for AWS before 1.6.1 allowed remote actors to obtain super-admin authority over the agent control plane, including registering tool servers, reading stored integration crede…
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Medium 6.5
YesWiki before 4.6.7 Unauthenticated Open Mail Relay via Contact Mail Handler
YesWiki before 4.6.7 contains an authentication bypass in the contact mail AJAX handler that allows unauthenticated attackers to send email through the wiki's SMTP server. Attackers can POST an XMLHttpRequest to the mail handler without field or type paramete…
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Critical 9.4
Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server
Mooncake through 0.3.13.post1 contains a missing authentication vulnerability in the HTTP metadata server /metadata handler that allows unauthenticated attackers to read, overwrite, and delete transfer engine metadata keys. Attackers can poison segment descri…
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Medium 5.4
Filament: Multi-factor authentication (app) management actions do not require password reauthentication
Filament is a collection of full-stack components for accelerated Laravel development. From 4.0.0 until 4.13.3 and 5.8.3, app-based multi-factor authentication management actions do not consistently require confirmation of the current password. An attacker wi…
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High 7.1
Missing Authentication in Teledyne FLIR Robots running Aware2
Missing authentication in the web interface in Teledyne FLIR Aware2 versions through 6.9.0.2 allows remote unauthenticated attackers to achieve denial of service against Teledyne FLIR PackBot robots running this software via misuse of the reboot endpoint.
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Medium 5.3
Podgrab Missing Authentication on WebSocket /ws Endpoint
Podgrab contains a missing authentication vulnerability in which the /ws WebSocket route is registered on the root gin engine instead of the BasicAuth-protected router group, allowing unauthenticated network clients to connect even when PASSWORD is configured…
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High 7.1
Unauthenticated do Method Onboarding Connect Allows Wi‑Fi Reconfiguration Denial of Service Vulnerability in TP-Link Tapo C120 & C200
Tapo C120 v1 and C200 v5 do not enforce authentication for do method HTTPS onboarding connect actions after initial setup. An unauthenticated adjacent attacker can submit unauthorized wireless configuration parameters, causing the camera to attempt connectio…
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Medium 5.3
Unauthenticated Onboarding Scan Information Disclosure in TP-Link Tapo C120 & C200
Tapo C120 v1 and C200 V5 contain a vulnerability in the HTTPS onboarding scan function due to missing authentication. After initial setup, an unauthenticated attacker on the same local network can invoke the scan action and retrieve nearby wireless access-poi…
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High 7.5
Foreman: unauthenticated information disclosure via provisioning token validation flaw
A flaw was found in Foreman. The Red Hat Satellite /unattended/provision API endpoint is vulnerable to an authentication bypass due to a semantic logic flaw in host_verifier.rb. The application verifies the database state of a provisioning token rather than i…
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Critical 9.3CVE-2026-13043 Public exploit
WatchGuard Endpoint Security Missing Authentication in Kernel Memory Access Driver Allows Arbitrary Kernel Memory Access
A missing authentication vulnerability in the Kernel Memory Access Driver (PSKMAD) used by WatchGuard endpoint security products allows a local, authenticated attacker to bypass the driver's access-control handshake and issue arbitrary privileged commands to …
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High 7.5
Apache HTTP Server: mod_auth_digest reauthentication attack
Missing authentication checks in mod_auth_digest in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an unauthenticated remote client to cause a denial of service (forced re-authentication) via forged Authorization headers w…
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Critical 9.8
ground-station before 0.8.0 Authentication Bypass via setup.restore
ground-station versions before 0.8.0 contain an authentication bypass vulnerability in the setup.restore command that allows unauthenticated attackers to execute arbitrary SQL during first-run setup mode. Attackers can invoke setup.restore via Socket.IO to pl…
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High 7.1
Oc-mirror__release-4.21: embedded local cache registry listens on all interfaces without authentication, with delete enabled
A flaw was found in oc-mirror. During mirroring operations, the embedded local cache registry binds to all network interfaces without authentication or encryption instead of restricting access to the local system. An unauthenticated attacker on an adjacent ne…
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High 7.5
Comelit 1456B gateway exposes remote configuration password via unauthenticated management interface
Comelit Multi-User Gateway for VIP System (model 1456B) firmware versions 2.9.1 and 2.10.0 expose a network-accessible management interface that does not require authentication. Through this interface, sensitive device configuration data - including the Remot…
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Medium 5.4
ZongXR SuperMarket Instant Buy InstantBuyController.java startBuy missing authentication
A weakness has been identified in ZongXR SuperMarket 1.0.0.0. This affects the function startBuy of the file instant-buy/src/main/java/com/supermarket/instantbuy/controller/InstantBuyController.java of the component Instant Buy. Executing a manipulation of th…