Common Weakness Enumeration

CWE-306

Allowed

Missing 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.

4576 vulnerabilities reference this CWE, most recent first.

CVE-2026-57125 (GCVE-0-2026-57125)

Vulnerability from cvelistv5 – Published: 2026-09-14 14:19 – Updated: 2026-09-14 19:18
VLAI
Title
PraisonAI: Unauthenticated RCE via Jobs API + Approval Bypass
Summary
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.59 and praisonaiagents 1.6.59, the unauthenticated POST /api/v1/runs Jobs API accepts attacker-controlled agent_yaml, and the approve field can mark execute_command as YAML-approved before @require_approval checks critical tools. This chain allows a remote caller to cause a configured language model agent to invoke arbitrary operating-system commands without credentials or operator interaction. This vulnerability is fixed in praisonai 4.6.59 and praisonaiagents 1.6.59 as fixed versions.
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 19:18 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-863 - Incorrect Authorization
Impacted products
Show details on NVD website

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CVE-2026-57124 (GCVE-0-2026-57124)

Vulnerability from cvelistv5 – Published: 2026-09-14 15:04 – Updated: 2026-09-14 19:02
VLAI
Title
PraisonAI UI MCP connect endpoint allows unauthenticated local command execution
Summary
PraisonAI is a multi-agent teams system. Prior to 4.6.59, the default UI host applications expose POST /api/mcp/connect without mandatory authentication and accept caller-controlled command and args values that PraisonAIUI passes to StdioMCPClient to start a local process. Because the UI commands bind to 0.0.0.0 by default, a reachable unauthenticated client can execute commands as the UI service account even when the MCP handshake later fails. This vulnerability is fixed in 4.6.59.
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 19:02 UTC
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
  • CWE-306 - Missing Authentication for Critical Function
Impacted products
Vendor Product Version
MervinPraison PraisonAI Affected: < 4.6.59
Create a notification for this product.
Show details on NVD website

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CVE-2026-57123 (GCVE-0-2026-57123)

Vulnerability from cvelistv5 – Published: 2026-09-14 14:46 – Updated: 2026-09-14 18:11
VLAI
Title
PraisonAI: MCP SSE transport binds 0.0.0.0 with no authentication and no Origin validation; bundled SecurityConfig is never wired in
Summary
PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.59, ToolsMCPServer.run_sse and launch_tools_mcp_server bind to 0.0.0.0 and create /sse and /messages/ routes without invoking the available SecurityConfig authentication, origin-validation, or DNS-rebinding controls. Any reachable client can list and invoke registered tools, and a browser can target a local instance through DNS rebinding, with impact determined by the registered file, shell, and code-execution tools. This vulnerability is fixed in praisonaiagents 1.6.59.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 17:11 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-350 - Reliance on Reverse DNS Resolution for a Security-Critical Action
  • CWE-1327 - Binding to an Unrestricted IP Address
Impacted products
Show details on NVD website

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CVE-2026-57112 (GCVE-0-2026-57112)

Vulnerability from cvelistv5 – Published: 2026-09-15 10:13 – Updated: 2026-09-16 17:51
VLAI
Title
PraisonAI ToolsMCPServer legacy SSE transport accepts attacker Host/Origin and exposes registered tools
Summary
PraisonAI is a multi-agent teams system. From praisonaiagents 0.6.0 until 1.6.59 and PraisonAI 3.10.0 until 4.6.59, ToolsMCPServer.run_sse() in src/praisonai-agents/praisonaiagents/mcp/mcp_server.py mounts SseServerTransport on the legacy /sse and /messages/ endpoints without default Host, Origin, or authentication enforcement. A malicious website can use DNS rebinding against a reachable local or internal SSE server, supply attacker-controlled Host and Origin headers, enumerate registered tools, and invoke them with the server user's privileges. The Streamable HTTP transport rejects the same hostile Origin, which isolates the flaw to the legacy SSE wrapper. An initial remediation was released in praisonaiagents 1.6.59 and PraisonAI 4.6.59.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 17:51 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-346 - Origin Validation Error
  • CWE-862 - Missing Authorization
Impacted products
Show details on NVD website

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CVE-2026-56782 (GCVE-0-2026-56782)

Vulnerability from cvelistv5 – Published: 2026-06-29 17:16 – Updated: 2026-07-14 21:34 X_Open Source
VLAI
Title
Gorse - Unauthenticated Database Dump and Restore via /api/dump and /api/restore Endpoints
Summary
Gorse before 0.5.10 contains an authentication bypass vulnerability in the /api/dump and /api/restore endpoints that allows unauthenticated attackers to access protected functionality when admin_api_key is empty, which is the default configuration. Remote attackers can exfiltrate the entire database including user records, items, and feedback data containing personally identifiable information, or completely overwrite the dataset without authentication.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-29 19:41 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
Impacted products
Vendor Product Version
gorse-io gorse Affected: 0 , < 0.5.10 (semver)
Unaffected: 0.5.10 (semver)
Create a notification for this product.
Date Public
2026-06-15 00:00
Show details on NVD website

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CVE-2026-56725 (GCVE-0-2026-56725)

Vulnerability from cvelistv5 – Published: 2026-09-25 17:09 – Updated: 2026-09-29 19:37
VLAI
Title
Zammad: Denial of Service via OTRS Import Controller
Summary
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, summary An unauthenticated request to POST /api/v1/import/otrs/import_check blocks a Zammad request worker for roughly two minutes. The import_check and import_status actions are missing the setup_done_response guard that other actions in the same controller carry, so they execute on fully set-up production instances. The action enters a retry loop against a blank OTRS endpoint, sleeping for 30 s + 45 s between attempts. Impact An unauthenticated remote attacker denies service to a production Zammad instance. Each request costs almost nothing and forces ~115 seconds of server-side blocking. A few requests per second saturate the Puma worker pool. The condition persists as long as the traffic continues. No account, valid import configuration, or target knowledge beyond the hostname is needed. CSRF token is trivially obtained from any prior GET response. This issue is fixed in version 7.0.2.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 19:37 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-400 - Uncontrolled Resource Consumption
Impacted products
Vendor Product Version
zammad zammad Affected: < 7.0.2
Create a notification for this product.
Show details on NVD website

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CVE-2026-56677 (GCVE-0-2026-56677)

Vulnerability from cvelistv5 – Published: 2026-08-17 21:14 – Updated: 2026-08-18 15:41
VLAI
Title
9Router: Authenticated Server-Side Request Forgery (SSRF) via OIDC Provider Test Endpoint
Summary
9Router is an AI router & token saver. In 0.5.4 and earlier, the POST /api/auth/oidc/test endpoint in src/app/api/auth/oidc/test/route.js passes the user-controlled issuerUrl parameter to fetchOidcDiscovery() in src/lib/auth/oidc.js without restricting private or loopback destinations, allowing unauthenticated attackers when dashboard login is disabled to scan internal services and reflect OIDC discovery fields including token_endpoint and jwks_uri.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 15:41 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-918 - Server-Side Request Forgery (SSRF)
References
Impacted products
Vendor Product Version
decolua 9router Affected: <= 0.5.4
Create a notification for this product.
Show details on NVD website

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CVE-2026-56675 (GCVE-0-2026-56675)

Vulnerability from cvelistv5 – Published: 2026-07-10 15:39 – Updated: 2026-07-10 16:55
VLAI
Title
9router: Reverse proxy locality collapse allows unauthenticated access to 9router /v1 APIs
Summary
9Router is an AI router & token saver. Prior to 0.5.2, 9router treats loopback requests as trusted and allows /v1/* access without an API key, so a same-host reverse proxy that forwards public traffic to the backend through 127.0.0.1 causes src/dashboardGuard.js to misclassify external requests as local. A remote unauthenticated attacker can access /v1 APIs such as /v1/models and may abuse configured upstream provider credentials through /v1 proxy endpoints depending on enabled providers. This issue is fixed in version 0.5.2.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-10 16:54 UTC
CWE
  • CWE-287 - Improper Authentication
  • CWE-290 - Authentication Bypass by Spoofing
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
Impacted products
Vendor Product Version
decolua 9router Affected: < 0.5.2
Create a notification for this product.
Show details on NVD website

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CVE-2026-56346 (GCVE-0-2026-56346)

Vulnerability from cvelistv5 – Published: 2026-06-20 18:27 – Updated: 2026-07-08 19:42
VLAI
Title
AVideo - Unauthenticated PGP Message Decryption via decryptMessage.json.php Endpoint
Summary
AVideo through version 25.0 contains an authentication bypass vulnerability in the decryptMessage.json.php endpoint that allows unauthenticated users to decrypt PGP messages. Remote attackers can submit private keys, ciphertext, and passphrases to perform server-side decryption without credentials, exposing key material to logs and enabling resource exhaustion attacks.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 12:41 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
References
Impacted products
Vendor Product Version
AVideo AVideo Affected: 0 , ≤ 25.0 (custom)
    cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-03-18 00:00
Credits
Show details on NVD website

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CVE-2026-56321 (GCVE-0-2026-56321)

Vulnerability from cvelistv5 – Published: 2026-06-22 21:04 – Updated: 2026-06-23 13:54
VLAI
Title
Capgo - Missing Authentication Middleware on GET /private/role_bindings Endpoint
Summary
Capgo (backend Supabase edge functions) before 12.128.2 does not apply the global authentication middleware to the GET /private/role_bindings/:org_id endpoint, unlike the POST and DELETE role_bindings routes, so unauthenticated requests reach the handler instead of being rejected at the middleware layer. The handler still performs its own authorization check and returns Unauthorized, so no direct data exposure occurs; the flaw is inconsistent authentication enforcement across HTTP methods that could enable authorization bypass if the handler logic changes.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 13:53 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
References
Impacted products
Vendor Product Version
Capgo Capgo Affected: 0 , < 12.128.2 (semver)
Unaffected: 12.128.2 (semver)
Create a notification for this product.
Date Public
2026-03-03 00:00
Credits
Show details on NVD website

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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.