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.
3436 vulnerabilities reference this CWE, most recent first.
CVE-2026-57475 (GCVE-0-2026-57475)
Vulnerability from cvelistv5 – Published: 2026-07-10 17:10 – Updated: 2026-07-10 17:10 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
Deloitte AI Assist for Customer unauthenticated configuration write
Summary
Deloitte AI Assist for Customer accepted unauthenticated POST requests through public-facing API endpoints that allowed a remote attacker to make limited additions to the configuration. These additions were not used by the system. On 2026-03-25, AI Assist for Customer restricted network access and enforced authentication for the previously exposed endpoints.
Severity
5.3 (Medium)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://zerotolerance.me/advisories/deloitte-aias… | third-party-advisory |
| https://zerotolerance.me/advisories/assets/VU4878… | third-party-advisory |
| https://www.cve.org/CVERecord?id=CVE-2026-57474 | vdb-entry |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Deloitte | AI Assist for Customer |
Affected:
0 , < 2026-03-25
(custom)
Unaffected: 2026-03-25 |
Date Public
2026-05-18 00:00
Credits
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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
EPSS
VEX
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.
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
4 references
| URL | Tags |
|---|---|
| https://github.com/gorse-io/gorse/issues/1292 | issue-tracking |
| https://github.com/gorse-io/gorse/pull/1293 | issue-tracking |
| https://github.com/gorse-io/gorse/commit/19fdcbb3… | patch |
| https://www.vulncheck.com/advisories/gorse-unauth… | third-party-advisory |
Impacted products
Date Public
2026-06-15 00:00
Credits
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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
EPSS
VEX
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.
Severity
8.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/decolua/9router/security/advis… | x_refsource_CONFIRM |
| https://github.com/decolua/9router/commit/da66783… | x_refsource_MISC |
| https://github.com/decolua/9router/releases/tag/v0.5.2 | x_refsource_MISC |
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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
EPSS
VEX
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.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
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/WWBN/AVideo/security/advisorie… | vendor-advisory |
| https://www.vulncheck.com/advisories/avideo-unaut… | third-party-advisory |
Date Public
2026-03-18 00:00
Credits
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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
EPSS
VEX
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.
Severity
5.3 (Medium)
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/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-missin… | third-party-advisory |
Impacted products
Date Public
2026-03-03 00:00
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CVE-2026-56299 (GCVE-0-2026-56299)
Vulnerability from cvelistv5 – Published: 2026-06-21 13:26 – Updated: 2026-06-23 14:19
VLAI
EPSS
VEX
Title
Capgo - Denial of Service via Unauthenticated OPTIONS Request to /build/upload Endpoint
Summary
Capgo before 12.128.2 contains an authentication bypass vulnerability in the /build/upload/:jobId/* endpoint that allows unauthenticated attackers to trigger consistent 500 errors. Remote attackers can send OPTIONS requests to bypass authentication middleware and invoke tusProxy logic with invalid credentials, enabling trivial request flooding and denial of service.
Severity
5.3 (Medium)
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/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-denial… | third-party-advisory |
Impacted products
Date Public
2026-02-10 00:00
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CVE-2026-56286 (GCVE-0-2026-56286)
Vulnerability from cvelistv5 – Published: 2026-06-30 22:08 – Updated: 2026-07-01 14:35
VLAI
EPSS
VEX
Title
Capgo - Account Deletion Without Password Confirmation
Summary
Capgo before 12.128.2 contains an authentication bypass vulnerability in the account deletion endpoint that allows deletion without password re-authentication or secondary verification. Attackers can delete user accounts via session hijacking, CSRF attacks, or parameter tampering, resulting in unauthorized account deletion, data loss, and denial-of-service.
Severity
SSVC
Exploitation: poc
Automatable: no
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/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-accoun… | third-party-advisory |
Impacted products
Date Public
2026-02-10 00:00
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CVE-2026-56270 (GCVE-0-2026-56270)
Vulnerability from cvelistv5 – Published: 2026-06-24 11:53 – Updated: 2026-06-24 12:46
VLAI
EPSS
VEX
Title
Flowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod Endpoint
Summary
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Severity
SSVC
Exploitation: poc
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/FlowiseAI/Flowise/security/adv… | vendor-advisory |
| https://www.vulncheck.com/advisories/flowise-unau… | third-party-advisory |
Impacted products
Date Public
2026-04-15 00:00
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CVE-2026-56262 (GCVE-0-2026-56262)
Vulnerability from cvelistv5 – Published: 2026-06-24 11:53 – Updated: 2026-07-14 21:34
VLAI
EPSS
VEX
Title
Crawl4AI - Unauthenticated Access to Monitor Endpoints via Docker API Server
Summary
Crawl4AI before 0.8.7 contains an authentication bypass vulnerability in the monitor router endpoints that allows unauthenticated attackers to access destructive operations. Remote attackers can invoke the /monitor/actions/cleanup endpoint and manipulate monitoring state without authentication, causing service disruption.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/unclecode/crawl4ai/security/ad… | vendor-advisory |
| https://github.com/unclecode/crawl4ai | product |
| https://www.vulncheck.com/advisories/crawl4ai-una… | third-party-advisory |
Impacted products
Date Public
2026-06-16 00:00
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CVE-2026-56164 (GCVE-0-2026-56164)
Vulnerability from cvelistv5 – Published: 2026-07-14 17:05 – Updated: 2026-07-14 19:58
VLAI
EPSS
VEX
Title
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Summary
Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.
Severity
SSVC
Exploitation: active
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://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 |
Affected:
16.0.0 , < 16.0.5561.1001
(custom)
|
|
| Microsoft | Microsoft SharePoint Server 2019 |
Affected:
16.0.0 , < 16.0.10417.20175
(custom)
|
|
| Microsoft | Microsoft SharePoint Server Subscription Edition |
Affected:
16.0.0 , < 16.0.19725.20434
(custom)
|
Date Public
2026-07-14 14:00
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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.