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CWE-306 (关键功能的认证机制缺失) — Vulnerability Class 1920

1920 vulnerabilities classified as CWE-306 (关键功能的认证机制缺失). AI Chinese analysis included.

CWE-306 represents a critical authentication weakness where software fails to verify user identity before executing sensitive operations or consuming substantial resources. Attackers typically exploit this vulnerability by directly invoking administrative endpoints, initiating high-cost processes, or accessing restricted data without valid credentials, effectively bypassing security controls. This oversight allows unauthorized users to perform actions intended only for authenticated individuals, leading to privilege escalation, data breaches, or denial of service through resource exhaustion. To mitigate this risk, developers must implement robust access control mechanisms that strictly enforce authentication checks on all critical functions. This involves integrating secure session management, validating tokens for every request, and applying the principle of least privilege to ensure that only verified users with appropriate permissions can trigger sensitive operations or consume significant system resources.

MITRE CWE Description
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Common Consequences (1)
Access Control, Other Gain Privileges or Assume Identity, Varies by Context
Exposing critical functionality essentially provides an attacker with the privilege level of that functionality. The consequences will depend on the associated functionality, but they can range from reading or modifying sensitive data, accessing administrative or other privileged functionality, or p…
Mitigations (5)
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 access…
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.
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…
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].
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].
Examples (2)
In the following Java example the method createBankAccount is used to create a BankAccount object for a bank management application.
public BankAccount createBankAccount(String accountNumber, String accountType, String accountName, String accountSSN, double balance) { BankAccount account = new BankAccount(); account.setAccountNumber(accountNumber); account.setAccountType(accountType); account.setAccountOwnerName(accountName); account.setAccountOwnerSSN(accountSSN); account.setBalance(balance); return account; }
Bad · Java
private boolean isUserAuthentic = false; // authenticate user, // if user is authenticated then set variable to true // otherwise set variable to false public boolean authenticateUser(String username, String password) { ... } public BankAccount createNewBankAccount(String accountNumber, String accountType, String accountName, String accountSSN, double balance) { BankAccount account = null; if (isUserAuthentic) { account = new BankAccount(); account.setAccountNumber(accountNumber); account.setAccountType(accountType); account.setAccountOwnerName(accountName); account.setAccountOwnerSSN(accountS
Good · Java
In 2022, the OT:ICEFALL study examined products by 10 different Operational Technology (OT) vendors. The researchers reported 56 vulnerabilities and said that the products were "insecure by design" [REF-1283]. If exploited, these vulnerabilities often allowed adversaries to change how the products operated, ranging from denial of service to changing the code that the products executed. Since these…
CVE ID Title CVSS Severity Published
CVE-2026-54776 CoreWCF: Unix Domain Socket PosixIdentity transport accepts connections that skip the security upgrade — CoreWCF 4.4 Medium 2026-07-08
CVE-2026-44025 Fluentd: Exposure of Sensitive Information via Monitor Agent API — fluentd 7.5 High 2026-07-08
CVE-2026-15063 Trustyai-service-operator: trustyai service operator: gorch port bypass when auth is enabled — trustyai-service-operator 6.3 Medium 2026-07-08
CVE-2026-54061 Dgraph Alpha group stores can be replaced via unauthenticated external snapshot import — dgraph 9.1 Critical 2026-07-08
CVE-2026-59705 mem0 - OpenMemory API Unauthenticated Access via Memory Endpoints — mem0 9.8 Critical 2026-07-07
CVE-2026-59706 mem0 - Unauthenticated Config API Exposure and SSRF via ollama_base_url — mem0 9.3 Critical 2026-07-07
CVE-2026-49471 Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE — serena 8.3 High 2026-07-07
CVE-2026-41899 Coolify unauthenticated feedback endpoint allows Discord webhook abuse — coolify 6.5 Medium 2026-07-06
CVE-2026-42331 FOSSBilling missing authorization in guest Invoice API endpoints — FOSSBilling - - 2026-07-06
CVE-2026-42341 FOSSBilling has an unauthenticated payment bypass via IPN callback forgery — FOSSBilling - - 2026-07-06
CVE-2026-14714 zhayujie chatgpt-on-wechat CowAgent wx Endpoint common.py verify_server missing authentication — chatgpt-on-wechat CowAgent 6.5 Medium 2026-07-05
CVE-2026-14622 jairiidriss restaurant-website-php-mysql AJAX Endpoint ajax_files missing authentication — restaurant-website-php-mysql 7.3 High 2026-07-04
CVE-2026-4767 Improper Access Control in TR7's WAF-ASP — WAF-ASP 9.8 Critical 2026-07-02
CVE-2026-13125 GeoVision GeoWebPlayer 1.1.1.0 Websocket Server function vulnerability — GeoWebPlayer 8.8 High 2026-07-02
CVE-2026-58127 PACSgear MediaWriter 5.2.1 Unauthenticated RCE via .NET Remoting TCP Service — PACSgear MediaWriter 9.8 Critical 2026-07-01
CVE-2026-58126 PACSgear PACS Scan 5.2.1 Unauthenticated RCE via .NET Remoting TCP Service — PACSgear PACS Scan 9.8 Critical 2026-07-01
CVE-2026-56286 Capgo - Account Deletion Without Password Confirmation — Capgo 8.1 High 2026-06-30
CVE-2026-58446 Presenton < 0.8.8-beta - Authentication Bypass of Session Auth via Unprotected MCP Endpoint — presenton 6.5 Medium 2026-06-30
CVE-2026-58375 JimuReport 2.5.0 - Unauthenticated Report Export via /jmreport/auto/export — jimureport 7.5 High 2026-06-30
CVE-2026-44949 Unauthenticated namespace creation and RBAC injection via rancher-webhook FleetWorkspace mutating webhook — Rancher - - 2026-06-30
CVE-2026-14162 Advantech|Hospital Quering Management - Missing Authentication — Hospital Quering Management 9.8 Critical 2026-06-30
CVE-2026-12819 DVP-12SE Missing Authentication and Unauthorized Write access Vulnerability — DVP-12SE - - 2026-06-30
CVE-2026-56782 Gorse - Unauthenticated Database Dump and Restore via /api/dump and /api/restore Endpoints — gorse 9.8 Critical 2026-06-29
CVE-2026-13546 Feehi CMS REST API Endpoint articles missing authentication — CMS 7.3 High 2026-06-29
CVE-2026-50136 Budibase: Unauthenticated S3 signed upload URL generation allows arbitrary writes with stored datasource credentials — budibase 7.4 High 2026-06-26
CVE-2026-43920 FOSSBilling: Unauthenticated update patcher endpoint allows remote maintenance execution — FOSSBilling - - 2026-06-25
CVE-2025-71327 Flowise - Authentication Bypass via Unprotected Registration Endpoint — Flowise 9.1 Critical 2026-06-25
CVE-2026-40702 EVoke Systems EVoke CSMS Missing Authentication for Critical Function — EVoke CSMS 9.4 Critical 2026-06-25
CVE-2026-54040 LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass — LibreChat 5.9 Medium 2026-06-25
CVE-2026-54036 LibreChat: 2FA Re-enrollment Allows Full Account 2FA Takeover Without OTP Verification — LibreChat 5.3 Medium 2026-06-25

Vulnerabilities classified as CWE-306 (关键功能的认证机制缺失) represent 1920 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.