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CWE-306 (关键功能的认证机制缺失) — Vulnerability Class 1131

1131 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-2026-28352 Indico missing access check in event series management API — indico 6.5 Medium2026-02-27
CVE-2025-15567 Vivo Health 安全漏洞 — Health 4.3 -2026-02-27
CVE-2025-15509 Vivo SmartRemote 安全漏洞 — SmartRemote 5.3 -2026-02-27
CVE-2026-27028 Mobility46 mobility46.se Missing Authentication for Critical Function — mobility46.se 9.4 Critical2026-02-27
CVE-2026-27772 EV Energy ev.energy Missing Authentication for Critical Function — ev.energy 9.4 Critical2026-02-27
CVE-2026-27767 SWITCH EV swtchenergy.com Missing Authentication for Critical Function — swtchenergy.com 9.4 Critical2026-02-26
CVE-2026-24731 EV2GO ev2go.io Missing Authentication for Critical Function — ev2go.io 9.4 Critical2026-02-26
CVE-2026-20781 CloudCharge cloudcharge.se Missing Authentication for Critical Function — cloudcharge.se 9.4 Critical2026-02-26
CVE-2026-25851 Chargemap chargemap.com Missing Authentication for Critical Function — chargemap.com 9.4 Critical2026-02-26
CVE-2026-22207 OpenViking Missing root_api_key Allows Anonymous ROOT Access — OpenViking 9.8 Critical2026-02-26
CVE-2026-27509 Unitree Go2 Missing DDS Authentication Enables Adjacent RCE — Unitree Go2 8.0 High2026-02-26
CVE-2026-3194 Chia Blockchain RPC Server Master Passphrase get_private_key missing authentication — Blockchain 4.5 Medium2026-02-25
CVE-2026-27846 Missing authentication in Linksys MR9600, Linksys MX4200 — MR9600 4.6AIMediumAI2026-02-25
CVE-2026-2624 Authentication Bypass in ePati's Antikor NGFW — Antikor Next Generation Firewall (NGFW) 9.8 Critical2026-02-25
CVE-2026-27595 Parse Dashboard has incomplete authentication on AI Agent endpoint — parse-dashboard 9.1AICriticalAI2026-02-25
CVE-2026-26340 Tattile Smart+ / Vega / Basic <= 1.181.5 Unauthenticated RTSP Stream Disclosure — Smart+ 7.5 -2026-02-24
CVE-2026-27584 ActualBudget server is Missing Authentication for SimpleFIN and Pluggy AI bank sync endpoints — actual 7.5 -2026-02-24
CVE-2025-14577 PHP Function Injection in Slican NPC/IPL/IPM/IPU — NCP 9.8AICriticalAI2026-02-24
CVE-2026-3053 DataLinkDC dinky OpenAPI Endpoint AppConfig.java addInterceptors missing authentication — dinky 7.3 High2026-02-24
CVE-2026-23693 ElementsKit Elementor Addons < 3.7.9 Unauthenticated Mailchimp REST Endpoint — ElementsKit Elementor Addons – Advanced Widgets & Templates Addons for Elementor 10.0 Critical2026-02-23
CVE-2026-24790 Welker OdorEyes EcoSystem Pulse Bypass System with XL4 Controller Missing Authentication for Critical Function — OdorEyes EcoSystem Pulse Bypass System with XL4 Controller 8.2 High2026-02-20
CVE-2026-26048 Jinan USR IOT Technology Limited (PUSR) USR-W610 Missing Authentication for Critical Function — USR-W610 7.5 High2026-02-20
CVE-2025-30410 Acronis Cyber Protect 访问控制错误漏洞 — Acronis Cyber Protect Cloud Agent 9.1AICriticalAI2026-02-20
CVE-2026-26319 OpenClaw has Missing Webhook Authentication in Telnyx Provider Allowing Unauthenticated Requests — openclaw 7.5 High2026-02-19
CVE-2025-14294 Razorpay for WooCommerce <= 4.7.8 - Missing Authentication to Unauthenticated Order Modification — Razorpay for WooCommerce 5.3 Medium2026-02-19
CVE-2026-27182 Saturn Remote Mouse Server UDP Command Injection RCE — Saturn Remote Mouse Server 8.4 High2026-02-18
CVE-2026-1670 Honeywell CCTV Products Missing Authentication for Critical Function — I-HIB2PI-UL 2MP IP 9.8 Critical2026-02-17
CVE-2025-7706 Improper Access Control in TUBITAK BILGEM's Liderahenk — Liderahenk 6.1 Medium2026-02-17
CVE-2026-2577 Nanobot Unauthenticated WhatsApp Session Hijack via WebSocket Bridge — nanobot 10.0 Critical2026-02-16
CVE-2025-32063 Enabling SSH server on Infotainment ECU — Infotainment system ECU 6.8 Medium2026-02-15

Vulnerabilities classified as CWE-306 (关键功能的认证机制缺失) represent 1131 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.