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 6.3
Missing authentication and clear‑text data transmission affecting Orca heat pumps
Missing authentication and clear‑text transmission of data from the heat pumps to the control server, combined with the absence of input validation on aggregated data, can lead to stored XSS that enables theft of cookies from the pump’s web control interface.…
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Medium 6.9
Neotoma: Unauthenticated Inspector/API access via reverse-proxy loopback auth bypass
Neotoma provides versioned records that persist across agent runs. From 0.6.0 to before 0.11.1, Neotoma can treat public reverse-proxied requests as local when the app receives them over a loopback socket and no Bearer token is present. In affected deployment…
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Medium 5.7
WWBN AVideo plugin/LoginControl/set.json.php: 2FA toggle endpoint has no CSRF protection, letting an attacker page silently disable a logged-in victim's 2FA
WWBN AVideo is an open source video platform. In 29.0 and earlier, there is a cross-site request forgery vulnerability on the 2FA toggle. plugin/LoginControl/set.json.php accepts POST type=set2FA value=false, calls LoginControl::setUser2FA(User::getId(), fals…
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Medium 6.0
RustFS: Reflective CORS with credentials on S3 listener; unauthenticated license metadata endpoint on console
RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, when RUSTFS_CORS_ALLOWED_ORIGINS is unset, the RustFS S3 listener's ConditionalCorsLayer reflects any request Origin value back as Access-Control-Allow-Origin and also sets Ac…
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Medium 6.9
RustFS: Unauthenticated RustFS console license endpoint exposes license metadata
RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, the RustFS console endpoint GET /rustfs/console/license returns parsed license metadata without requiring authentication. The endpoint is registered on the console listener an…
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Medium 6.5
epa4all-client: Unauthenticated REST API for Patient Record Writes
epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. In 1.2.4 and earlier, any network-reachable caller can write arbitrary documents to any patient's electronic health record accessible by the institution's SMC-B card. In a…
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Medium 6.9
Kavita: No authentication at /api/Reader/image
Kavita is a cross platform reading server. Prior to 0.9.0, the ReaderController.GetImage endpoint is decorated with [AllowAnonymous], allowing completely unauthenticated access to page images from any chapter in any library. While the endpoint accepts an apiK…
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Medium 5.6
ItzCrazyKns Vane API route.ts missing authentication
A security vulnerability has been detected in ItzCrazyKns Vane up to 1.12.1. Affected by this issue is some unknown functionality of the file route.ts of the component API. The manipulation leads to missing authentication. The attack may be initiated remotely…
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Medium 5.3
Algernon: Auto-refresh SSE event server binds to all interfaces with Access-Control-Allow-Origin: * and no authentication
### Summary When auto-refresh is enabled, Algernon spins up an SSE handler that streams a `data:` line for every filesystem event under the watched directory. The handler performs **no authentication** of any kind — no shared token, no cookie check against th…
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Medium 6.5
Sensitive user data could be leaked to other applications through Reader mode
Firefox for iOS hosted Reader mode on an unauthenticated local web server, allowing another application on the same device to request arbitrary URLs and receive the response rendered with the signed-in user's cookies. This vulnerability was fixed in Firefox f…
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Medium 5.3
Sanluan PublicCMS Trade Address Query TradeAddressListDirective.java execute missing authentication
A weakness has been identified in Sanluan PublicCMS 5.202506.d. This issue affects the function execute of the file publiccms-trade/src/main/java/com/publiccms/views/directive/trade/TradeAddressListDirective.java of the component Trade Address Query Handler. …
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Medium 5.3CVE-2026-45397 Scanner template
Open WebUI: Unauthenticated RAG Configuration Disclosure
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, GET /api/v1/retrieval/ returns live RAG pipeline configuration to any unauthenticated HTTP client. No Authorization header, cookie, or API key i…
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Medium 5.3
Hedera Guardian Authentication Bypass Information Disclosure
Hedera Guardian through 3.5.1 contains an authentication bypass vulnerability in the GET /api/v1/demo/registered-users endpoint that allows unauthenticated attackers to retrieve sensitive user information. Attackers can access the endpoint without providing a…
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Medium 6.3
Missing authentication in the KVM key download endpoint could allow an unauthenticated attacker with knowledge of the e…
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Medium 5.9
Prisma Access Agent Endpoint DLP: Authorization Bypass Vulnerabilities
Multiple authorization bypass vulnerabilities in the Endpoint DLP component of Prisma Access Agent® allow a local attacker to bypass authentication controls and execute privileged operations.
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Medium 6.1
Fides: Privacy Request Identity Verification Bypass Vulnerability via Duplicate Detection
Fides is an open-source privacy engineering platform. From 2.75.0 to before 2.83.2, Fides deployments that enable both subject identity verification and duplicate privacy request detection are affected by a vulnerability in which an administrator can approve …
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Medium 5.3
mem0 server lacks authentication and authorization controls for its memory creation API endpoint
The mem0 1.0.0 server lacks authentication and authorization controls for its memory creation API endpoint (POST /memories). The endpoint allows unauthenticated users to submit arbitrary memory records without verifying their identity or permissions. A remote…
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Medium 6.5
mem0 server lacks authentication and authorization controls for its memory deletion API endpoint
The mem0 1.0.0 server lacks authentication and authorization controls for its memory deletion API endpoint (DELETE /memories). The endpoint allows unauthenticated users to delete memory records by specifying arbitrary user identifiers (e.g., user_id, run_id, …
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Medium 6.5
The mem0 1.0.0 server lacks authentication and authorization controls for its memory deletion API endpoint (DELETE /mem…
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Medium 6.5
The mem0 1.0.0 server lacks authentication and authorization controls for its memory reset and table re-creation functi…
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Medium 5.3
WWBN AVideo: Unauthenticated User Enumeration in `objects/users.json.php` via `isCompany` Parameter Flips `$ignoreAdmin = true` and Defeats Admin-Only Listing Guard
WWBN AVideo is an open source video platform. In versions up to and including 29.0, objects/users.json.php exposes two unauthenticated paths that disclose the full set of registered user accounts. The isCompany request parameter causes the handler to set $ign…
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Medium 6.8
pyload-ng: non-admin SETTINGS users can disable outbound TLS peer verification
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, the set_config_value() API method (@permission(Perms.SETTINGS)) in src/pyload/core/api/__init__.py gates security-sensitive options behind a hand-maintained allowlis…
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Medium 6.3
UGREEN CM933 Administrative missing authentication
A security vulnerability has been detected in UGREEN CM933 1.1.59.4319. The impacted element is an unknown function of the component Administrative Interface. Such manipulation leads to missing authentication. The attack requires being on the local network. Y…
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Medium 6.7
Scoold: Persistent Admin Takeover by Overwriting the admins Configuration Setting via Forged JWT (missing `jti` validation)
Scoold is a Q&A and a knowledge sharing platform for teams. Prior to version 1.67.0, Scoold allows the admins configuration value to be modified through /api/config/set/admins with a forged Bearer token that is accepted as an admin API token. Once that settin…
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Medium 6.3
Authentication bypass vulnerability in GitHub Enterprise Server allowed creation of local user accounts bypassing the configured external identity provider
An authentication bypass vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to create a local user account, bypassing the configured external identity provider. When external authentication was enabled, the signu…
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Medium 5.3
PicoTronica e-Clinic Healthcare System ECHS API Endpoint patient-records missing authentication
A vulnerability was detected in PicoTronica e-Clinic Healthcare System ECHS 5.7. The affected element is an unknown function of the file /cdemos/echs/api/v2/patient-records of the component API Endpoint. The manipulation results in missing authentication. The…
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Medium 6.3
chatchat-space Langchain-Chatchat Compatible File Service openai_routes.py delete_file missing authentication
A vulnerability was detected in chatchat-space Langchain-Chatchat up to 0.3.1.3. This vulnerability affects the function files/list_files/retrieve_file/retrieve_file_content/delete_file of the file libs/chatchat-server/chatchat/server/api_server/openai_routes…
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Medium 6.5
crocodilestick Calibre-Web-Automated Admin Endpoint cwa_functions.py missing authentication
A flaw has been found in crocodilestick Calibre-Web-Automated up to 4.0.6. Affected by this issue is some unknown functionality of the file cps/cwa_functions.py of the component Admin Endpoint. This manipulation causes missing authentication. It is possible t…
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Medium 6.5
Unauthenticated Account Registration via /user/invited Bypasses All Signup Restrictions in Chartbrew
Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. In version 4.9.0, the endpoint POST /user/invited does not validate any invite token, authentication header, or session. Any unauthe…
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Medium 5.6
NousResearch hermes-agent Webhooks Endpoint webhook.py missing authentication
A vulnerability was found in NousResearch hermes-agent 0.8.0. Affected by this issue is some unknown functionality of the file gateway/platforms/webhook.py of the component Webhooks Endpoint. The manipulation of the argument _INSECURE_NO_AUTH results in missi…
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Medium 4.0
bookserver in KDE Arianna before 26.04.1 allows attackers to read files over a socket connection by guessing a URL.
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Medium 5.9
Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core). The suppo…
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Medium 5.9
Vulnerability in the Oracle Identity Manager Connector product of Oracle Fusion Middleware (component: Core). The suppo…
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Medium 6.5
Vulnerability in the PeopleSoft Enterprise HCM Human Resources product of Oracle PeopleSoft (component: Job Profile Man…
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Medium 6.5
Vulnerability in the PeopleSoft Enterprise HCM Absence Management product of Oracle PeopleSoft (component: Absence Mana…
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Medium 5.7
Exposed Session Token in canonical-livepatch client snap
An improper access control vulnerability in the canonical-livepatch snap client prior to version 10.15.0 allows a local unprivileged user to obtain a sensitive, root-level authentication token by sending an unauthenticated request to the livepatchd.sock Unix …
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Medium 5.3
SD-330AC and AMC Manager provided by silex technology, Inc. contain a missing authentication for critical function issu…
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Medium 5.3
SD-330AC and AMC Manager provided by silex technology, Inc. contain a missing authentication for critical function issu…
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Medium 6.5
serge-chat serge Model API Endpoint model.py delete_model missing authentication
A weakness has been identified in serge-chat serge up to 1.4TB. The impacted element is the function download_model/delete_model of the file api/src/serge/routers/model.py of the component Model API Endpoint. Executing a manipulation can lead to missing authe…
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Medium 6.5
liangliangyy DjangoBlog Clean Endpoint views.py missing authentication
A weakness has been identified in liangliangyy DjangoBlog up to 2.1.0.0. This impacts an unknown function of the file blog/views.py of the component Clean Endpoint. This manipulation causes missing authentication. The attack may be initiated remotely. The exp…