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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-2026-5777 Security Misconfiguration Vulnerability in Atom 3x Projector — Atom 3X Projector 8.8 - 2026-04-10
CVE-2026-39848 Dockyard's Unauthenticated Cron Endpoint in Dockyard Enables Container Enumeration and Database Manipulation — dockyard 6.5 Medium 2026-04-09
CVE-2026-33788 Junos OS Evolved: Local, authenticated attacker can gain privileged access to FPCs — Junos OS Evolved 7.8 High 2026-04-09
CVE-2026-4436 GPL Odorizers GPL750 Missing Authentication for Critical Function — GPL750 (XL4) 8.6 High 2026-04-09
CVE-2026-39987 marimo Affected by Pre-Auth Remote Code Execution via Terminal WebSocket Authentication Bypass — marimo 9.8AI Critical AI 2026-04-09
CVE-2025-30650 Junos OS: Privileged local user can gain access to a Linux-based FPC as root — Junos OS 6.7 Medium 2026-04-08
CVE-2026-39393 Post-Installation Re-entry via Cache-Dependent Install Guard Bypass in ci4ms — ci4ms 8.1 High 2026-04-08
CVE-2026-5300 Missing Authentication for Critical Function in coolercontrold — coolercontrold 5.9 Medium 2026-04-08
CVE-2026-35584 FreeScout has an Unauthenticated IDOR in Open Tracking Endpoint Allows Cross-Conversation Thread Manipulation and Enumeration — freescout 8.2AI High AI 2026-04-07
CVE-2026-35523 Authentication bypass in strawberry-graphql via legacy graphql-ws WebSocket subprotocol — strawberry 7.5 High 2026-04-07
CVE-2026-22679 Weaver E-cology 10.0 Unauthenticated RCE via dubboApi Debug Endpoint — E-cology 9.8 Critical 2026-04-07
CVE-2026-35450 WWBN AVideo has Unauthenticated FFmpeg Remote Server Status Disclosure via check.ffmpeg.json.php — AVideo 5.3 Medium 2026-04-06
CVE-2026-5676 Totolink A8000R cstecgi.cgi setLanguageCfg missing authentication — A8000R 7.3 High 2026-04-06
CVE-2026-5632 assafelovic gpt-researcher HTTP REST API Endpoint missing authentication — gpt-researcher 7.3 High 2026-04-06
CVE-2026-5616 JeecgBoot AI Chat JeecgBizToolsProvider.java missing authentication — JeecgBoot 7.3 High 2026-04-06
CVE-2026-4272 CVE-2026-4272 - Bluetooth Remote Execution of System Commands Vulnerability — Barcode Scanners 8.1 High 2026-04-05
CVE-2019-25686 Core FTP 2.0 build 653 PBSZ Unauthenticated Denial of Service — Core FTP 7.5 High 2026-04-05
CVE-2019-25678 C4G BLIS 3.4 SQL Injection via users_select.php — Basic Laboratory Information System 8.2 High 2026-04-05
CVE-2018-25246 Wikipedia 12.0 Denial of Service via Search — Wikipedia 7.5 High 2026-04-04
CVE-2018-25241 VPN Browser+ 1.1.0.0 Denial of Service — VPN Browser+ 7.5 High 2026-04-04
CVE-2026-34952 PraisonAI: Missing Authentication in WebSocket Gateway — PraisonAI 9.1 Critical 2026-04-03
CVE-2026-28766 Gardyn Cloud API Missing Authentication for Critical Function — Cloud API 9.3 Critical 2026-04-03
CVE-2026-28767 Gardyn Cloud API Missing Authentication for Critical Function — Cloud API 5.3 Medium 2026-04-03
CVE-2026-32646 Gardyn Cloud API Missing Authentication for Critical Function — Cloud API 7.5 High 2026-04-03
CVE-2026-0545 Missing Authentication for Critical Function in mlflow/mlflow — mlflow/mlflow 9.8AI Critical AI 2026-04-03
CVE-2026-32211 Azure MCP Server Information Disclosure Vulnerability — Azure Web Apps 9.1 Critical 2026-04-02
CVE-2025-15620 HiOS Switch Platform Denial-of-Service via Web Interface — Hirschmann HiOS Switch Platform 8.6 High 2026-04-02
CVE-2026-35053 OneUptime: Unauthenticated Workflow Execution via ManualAPI — oneuptime 7.1AI High AI 2026-04-02
CVE-2026-34758 OneUptime: Missing Authentication on Notification Endpoints — oneuptime 9.1 Critical 2026-04-02
CVE-2026-29132 ESWmail-Verify Bypass — Secure Email Gateway 4.3AI Medium AI 2026-04-02

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.