Common Weakness Enumeration
CWE-306
AllowedMissing Authentication for Critical Function
Abstraction: Base · Status: Draft
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
3737 vulnerabilities reference this CWE, most recent first.
GCVE-1337-2026-000000000… (CVE-2026-7415)
Vulnerability from gna-1337 – Published: 2026-05-07 16:11 – Updated: 2026-05-07 17:04
VLAI
EPSS
VEX
Title
Open MQTT orchestration without read/write ACLs in Yarbo robot firmware
Summary
The MQTT broker embedded in Yarbo firmware v2.3.9 is configured to allow anonymous connections with no topic-level read or write ACLs. Any host on the same network can subscribe to sensitive telemetry topics or publish control messages directly to the robot without authentication or authorization of any kind.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-306 - Missing authentication for critical function
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Bin4ry/yarbo-nat-in-my-back-yard | third-party-advisory |
| https://takeonme.org/gcves/GCVE-1337-2026-0000000… | third-party-advisory |
Date Public
2026-05-07 16:00
Credits
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CVE-2026-70552 (GCVE-0-2026-70552)
Vulnerability from cvelistv5 – Published: 2026-08-04 19:28 – Updated: 2026-08-04 20:01
VLAI
EPSS
VEX
Title
MaxSite CMS 109.5 Unauthenticated AJAX Dispatcher Bypass via ajax.php
Summary
MaxSite CMS 109.5 and earlier contains an authentication bypass vulnerability in the AJAX dispatcher that allows unauthenticated attackers to access admin-gated endpoints by supplying any X-Requested-With header and requesting a base64-encoded path resolving to any *-ajax.php file in the codebase. Attackers can exploit this dispatcher bypass to reach privileged plugin endpoints without credentials, enabling actions such as manipulating poll states and vote counts, and amplifying the impact of any dangerous operation performed by admin-only ajax files across the plugin tree.
Severity
9.8 (Critical)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/maxsite/cms | product |
| https://max-3000.com/page/maxsite-cms-109-6 | patch |
| https://www.vulncheck.com/advisories/maxsite-cms-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MaxSite | MaxSite CMS |
Affected:
0.78 , ≤ 109.5
(custom)
Unaffected: 109.6 (custom) |
Date Public
2026-08-04 00:00
Credits
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CVE-2026-69703 (GCVE-0-2026-69703)
Vulnerability from cvelistv5 – Published: 2026-08-04 18:41 – Updated: 2026-08-04 19:30
VLAI
EPSS
VEX
Title
Atlas-Livre Unauthenticated Access via Admin Controllers Missing Exit
Summary
Atlas-Livre contains an improper access control vulnerability in the admin controllers under Espace_admin/controleur/ that allows unauthenticated attackers to bypass session-based authentication guards by sending raw HTTP requests that ignore redirects. Attackers can invoke destructive admin actions such as record deletion by requesting controller endpoints with GET parameters like supp, because the PHP header() redirect is never followed by an exit or die call, allowing all subsequent code including database operations to execute regardless of session state.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/maximeAmini/Atals-Livre | product |
| https://gist.github.com/arjunjaincs/8cd878b6628d5… | technical-description |
| https://www.vulncheck.com/advisories/atlas-livre-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| maximeAmini | Atals-Livre |
Affected:
0 , ≤ de0893f
(git)
|
Date Public
2026-08-04 00:00
Credits
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CVE-2026-69091 (GCVE-0-2026-69091)
Vulnerability from cvelistv5 – Published: 2026-08-03 13:20 – Updated: 2026-08-03 15:36
VLAI
EPSS
VEX
Title
Admidio before 5.0.11 Authentication Bypass via forum.php
Summary
Admidio before 5.0.11 contains an authentication bypass vulnerability in the forum module when configured in login-only mode. The access control logic in modules/forum.php fails to validate the login-only configuration state, allowing unauthenticated attackers to read forum topics and posts by directly accessing the module with read-only parameters.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Admidio/admidio/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/admidio-befo… | third-party-advisory |
Impacted products
Date Public
2026-07-20 00:00
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CVE-2026-68578 (GCVE-0-2026-68578)
Vulnerability from cvelistv5 – Published: 2026-08-02 12:15 – Updated: 2026-08-03 15:44
VLAI
EPSS
VEX
Title
ArcadeDB before 26.7.3 Authentication Bypass via MCP Transport
Summary
ArcadeDB versions before 26.7.3 fail to bind the authenticated principal in the MCP HTTP transport, causing all engine permission checks to silently pass as no-ops. Non-root MCP-allowed users can perform arbitrary database writes, DDL, schema mutations, and execute arbitrary JavaScript code via the query tool.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ArcadeData/arcadedb/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/arcadedb-aut… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ArcadeData | arcadedb |
Affected:
0 , < 26.7.3
(semver)
Unaffected: 26.7.3 (semver) |
Date Public
2026-07-17 00:00
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CVE-2026-68502 (GCVE-0-2026-68502)
Vulnerability from cvelistv5 – Published: 2026-07-30 20:38 – Updated: 2026-07-31 14:07
VLAI
EPSS
VEX
Title
LazyOwn: Unauthenticated Socket.IO `input` Event Reaches LazyOwn Command Dispatcher — Unauthenticated RCE
Summary
LazyOwn RedTeam/APT Framework is an AI-powered C2 and red-team operations framework. Prior to 0.2.154, LazyOwn's lazyc2.py registers an unauthenticated Socket.IO input event handler that dispatches data.get('value') to LazyOwnShell.one_cmd, reaching LazyOwnShell.do_cmd and subprocess.call(command, shell=True), allowing unauthenticated remote code execution in the C2 process. This issue is fixed in 0.2.154.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/grisuno/LazyOwn/security/advis… | x_refsource_CONFIRM |
| https://github.com/grisuno/LazyOwn/commit/2e1e3a7… | x_refsource_MISC |
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CVE-2026-67610 (GCVE-0-2026-67610)
Vulnerability from cvelistv5 – Published: 2026-08-03 16:02 – Updated: 2026-08-03 16:57 X_Open Source
VLAI
EPSS
VEX
Title
OpenEMR 8.2.0 OAuth2 Dynamic Client Registration Unauthorized FHIR Access
Summary
OpenEMR through 8.2.0 contains an improper authentication vulnerability in the OAuth2 dynamic client registration endpoint that allows unauthenticated attackers to register a malicious client with system-level FHIR scopes by supplying a self-generated RSA keypair via the jwks field. Once an administrator approves the registered client, attackers can use the client_credentials grant with a self-signed JWT assertion to obtain access tokens granting read access to all FHIR resources across all patients in the system.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://jivasecurity.com/writeups/openemr-unauth-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openemr-oaut… | third-party-advisory |
Date Public
2026-08-02 00:00
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CVE-2026-67594 (GCVE-0-2026-67594)
Vulnerability from cvelistv5 – Published: 2026-07-30 19:14 – Updated: 2026-07-31 15:59 X_Open Source
VLAI
EPSS
VEX
Title
Spikster Missing Authentication via API Route Group
Summary
Spikster through commit e1cdf8c contains a missing authentication vulnerability that allows unauthenticated remote attackers to access all API routes by exploiting the unattached CipiAuth middleware, which is registered but never applied to any route in the API routing configuration. Attackers can invoke approximately 50 unprotected API endpoints to enumerate and provision servers, reset root passwords, read and write arbitrary files on the host, and create database users.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/yolanmees/Spikster/issues/24 | technical-descriptionissue-tracking |
| https://www.vulncheck.com/advisories/spikster-mis… | third-party-advisory |
Impacted products
Date Public
2026-07-30 00:00
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CVE-2026-67426 (GCVE-0-2026-67426)
Vulnerability from cvelistv5 – Published: 2026-07-29 18:43 – Updated: 2026-07-29 19:05
VLAI
EPSS
VEX
Title
Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration
Summary
Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.7, the standalone flyto-verification service in src/core/verification_service.py exposes unauthenticated POST /run on 0.0.0.0:8344 and uses client-supplied callback_url for an outbound POST with X-Internal-Key: $FLYTO_RUNNER_SECRET while bypassing target_allowed, allowing unauthenticated SSRF and runner secret exfiltration. This issue is fixed in version 2.26.7.
Severity
9.3 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/flytohub/flyto-core/security/a… | x_refsource_CONFIRM |
| https://github.com/flytohub/flyto-core/commit/0a0… | x_refsource_MISC |
| https://github.com/flytohub/flyto-core/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| flytohub | flyto-core |
Affected:
< 2.26.7
|
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CVE-2026-67349 (GCVE-0-2026-67349)
Vulnerability from cvelistv5 – Published: 2026-07-30 14:40 – Updated: 2026-07-31 22:56 X_Open Source
VLAI
EPSS
VEX
Title
OpenCost < 1.121.0 Unauthenticated Helm Values Exposure and Admin Bypass
Summary
OpenCost before 1.121.0 fails to authenticate the GET /helmValues endpoint, exposing base64-decoded HELM_VALUES environment variable containing cloud provider credentials. Additionally, adminAuthMiddleware fails open when ADMIN_TOKEN is unset, allowing unauthenticated attackers to modify GCP service account keys via POST /serviceKey to redirect billing calls.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/opencost/opencost/issues/3893 | technical-descriptionexploitissue-tracking |
| https://github.com/opencost/opencost/releases/tag… | release-notes |
| https://github.com/opencost/opencost/pull/3910 | issue-trackingpatch |
| https://github.com/opencost/opencost/commit/a49a2… | patch |
| https://www.vulncheck.com/advisories/opencost-una… | third-party-advisory |
Impacted products
Date Public
2026-07-02 00:00
Credits
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Mitigation
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.
Mitigation MIT-15
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.
Mitigation
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.
Mitigation MIT-4.5
Architecture and Design
Strategy: Libraries or Frameworks
- 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].
Mitigation
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].
CAPEC-12: Choosing Message Identifier
This pattern of attack is defined by the selection of messages distributed via multicast or public information channels that are intended for another client by determining the parameter value assigned to that client. This attack allows the adversary to gain access to potentially privileged information, and to possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could be used to change the adversary's identifier to more a privileged one.
CAPEC-166: Force the System to Reset Values
An attacker forces the target into a previous state in order to leverage potential weaknesses in the target dependent upon a prior configuration or state-dependent factors. Even in cases where an attacker may not be able to directly control the configuration of the targeted application, they may be able to reset the configuration to a prior state since many applications implement reset functions.
CAPEC-216: Communication Channel Manipulation
An adversary manipulates a setting or parameter on communications channel in order to compromise its security. This can result in information exposure, insertion/removal of information from the communications stream, and/or potentially system compromise.
CAPEC-36: Using Unpublished Interfaces or Functionality
An adversary searches for and invokes interfaces or functionality that the target system designers did not intend to be publicly available. If interfaces fail to authenticate requests, the attacker may be able to invoke functionality they are not authorized for.
CAPEC-62: Cross Site Request Forgery
An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.