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CWE-306 (关键功能的认证机制缺失) — Vulnerability Class 1115

1115 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, OtherGain 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 DesignDivide 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 DesignFor 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 DesignWhere 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 DesignUse 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, OperationWhen 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 IDTitleCVSSSeverityPublished
CVE-2026-42095 Arianna 访问控制错误漏洞 — Arianna 4.0 Medium2026-04-24
CVE-2026-27843 SenseLive X3050 Missing authentication for critical function — X3050 9.1 Critical2026-04-23
CVE-2026-6376 Missing authentication for critical function in SpiceJet Online Booking System — Online Booking System 5.3AIMediumAI2026-04-23
CVE-2026-41273 Flowise: Unauthenticated OAuth 2.0 Access Token Disclosure via Public Chatflow — Flowise 7.5AIHighAI2026-04-23
CVE-2026-23751 Kofax Capture 6.0.0.0 Unauthenticated File Read/Write & SMB Coercion via .NET Remoting — Kofax Capture 9.8 Critical2026-04-23
CVE-2026-41176 Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution — rclone 9.1 -2026-04-22
CVE-2018-25259 Terminal Services Manager 3.1 Buffer Overflow SEH — Terminal Services Manager 8.4 High2026-04-22
CVE-2026-5749 Inadequate access control vulnerability in Fullstep — Fullstep 7.5AIHighAI2026-04-22
CVE-2026-40884 goshs: Empty-username SFTP password authentication bypass in goshs — goshs 9.8 Critical2026-04-21
CVE-2026-40050 CrowdStrike LogScale Unauthenticated Path Traversal — LogScale Self-Hosted 9.8 Critical2026-04-21
CVE-2026-24177 NVIDIA KAI Scheduler 访问控制错误漏洞 — KAI Scheduler 7.7 High2026-04-21
CVE-2026-41039 Information Disclosure Vulnerability in Quantum Networks Router QN-I-470 — Router QN-I-470 7.5AIHighAI2026-04-21
CVE-2026-25058 Vexa's unauthenticated internal transcript endpoint exposed by default — vexa 7.5 High2026-04-20
CVE-2026-26944 Dell PowerProtect Data Domain(Dell PowerProtect DD) 安全漏洞 — PowerProtect Data Domain 8.8 High2026-04-20
CVE-2026-6369 Exposed Session Token in canonical-livepatch client snap — canonical-livepatch 7.8AIHighAI2026-04-20
CVE-2026-32957 Silex SD-330AC和Silex AMC Manager 安全漏洞 — SD-330AC 5.3 Medium2026-04-20
CVE-2026-32962 Silex SD-330AC和Silex AMC Manager 安全漏洞 — SD-330AC 5.3 Medium2026-04-20
CVE-2026-6588 serge-chat serge Model API Endpoint model.py delete_model missing authentication — serge 6.5 Medium2026-04-20
CVE-2026-6582 TransformerOptimus SuperAGI Vector Database Management Endpoint vector_dbs.py get_vector_db_details missing authentication — SuperAGI 7.3 High2026-04-19
CVE-2026-6579 liangliangyy DjangoBlog Clean Endpoint views.py missing authentication — DjangoBlog 6.5 Medium2026-04-19
CVE-2026-6577 liangliangyy DjangoBlog logtracks Endpoint views.py missing authentication — DjangoBlog 7.3 High2026-04-19
CVE-2026-35546 Anviz Products Missing Authentication for Critical Function — Anviz CX7 Firmware 9.8 Critical2026-04-17
CVE-2026-40461 Anviz Products Missing Authentication for Critical Function — Anviz CX7 Firmware 7.5 High2026-04-17
CVE-2026-6348 Simopro Technology|WinMatrix - Missing Authentication — WinMatrix 8.8 High2026-04-16
CVE-2026-34160 Chamilo LMS: Unauthenticated SSRF via PENS Plugin allows attacker to probe internal network and reach cloud metadata services — chamilo-lms 8.6 High2026-04-14
CVE-2026-33715 Chamilo LMS has Unauthenticated SSRF and Open Email Relay via install.ajax.php test_mailer action — chamilo-lms 7.2 High2026-04-14
CVE-2026-26159 Remote Desktop Licensing Service Elevation of Privilege Vulnerability — Windows 10 Version 1607 7.8 High2026-04-14
CVE-2026-26160 Remote Desktop Licensing Service Elevation of Privilege Vulnerability — Windows 10 Version 1607 7.8 High2026-04-14
CVE-2025-53847 Fortinet FortiOS 访问控制错误漏洞 — FortiOS 6.2 Medium2026-04-14
CVE-2026-40289 PraisonAI Browser Server allows unauthenticated WebSocket clients to hijack connected extension sessions — PraisonAI 9.1 Critical2026-04-14

Vulnerabilities classified as CWE-306 (关键功能的认证机制缺失) represent 1115 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.