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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-2026-55814 Apache Ranger: Download APIs expose plugin data without authentication — Apache Ranger - - 2026-08-10
CVE-2026-61808 LightRAG: Missing Authentication for Critical API Functions in Default Configuration — LightRAG 9.8 Critical 2026-08-07
CVE-2025-71409 No Authentication for Very High Frequency Data Link messages used in CPDLC — CPDLC 7.1 High 2026-08-07
CVE-2026-63508 Microsoft Planetary Computer Pro Elevation of Privilege Vulnerability — Microsoft Planetary Computer Pro (GeoCatalog) 10.0 Critical 2026-08-06
CVE-2026-70559 Dinky Unauthenticated System Configuration and Credential Disclosure via GET /api/sysConfig/getAll — Dinky 7.5 High 2026-08-06
CVE-2026-53984 Ground Station prior to 0.6.0 Unauthenticated Database Wipe and Arbitrary Data Injection via Socket.IO database_backup full_restore Action — Ground Station 9.1 Critical 2026-08-06
CVE-2026-53985 Ground Station prior to 0.6.0 Unauthenticated DoS via service_control Socket.IO — Ground Station 7.5 High 2026-08-06
CVE-2026-53977 OpenChamber 1.11.7 Unauthenticated DoS via /api/system/shutdown — OpenChamber 7.5 High 2026-08-06
CVE-2026-18990 letta-ai LettaBot API Status Route server.ts missing authentication — LettaBot 7.3 High 2026-08-06
CVE-2026-69111 Milvus 2.6.22, 3.0.0 Unauthenticated Denial of Service via /management/stop — milvus 7.5 High 2026-08-05
CVE-2026-8446 Langflow is affected by security vulnerabilities in Model Context Protocol features — Langflow OSS 7.5 High 2026-08-05
CVE-2026-48911 Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow — Apache Answer - - 2026-08-05
CVE-2026-71289 NASA-AMMOS ANMS / JHUAPL dtnma-tools Unauthenticated Remote Command Execution via Exposed AMP Manager REST API — anms 9.8 Critical 2026-08-05
CVE-2026-71262 IoTSharp BlobStorageController Missing Authentication and Path Traversal — IoTSharp 9.8 Critical 2026-08-05
CVE-2026-71241 Book-Management-System - Unauthenticated Disclosure of Student PII and Borrowing History — Book-Management-System 7.5 High 2026-08-05
CVE-2026-25703 Potential information leakage from manager /network/graph API in NeuVector — NeuVector 7.3 High 2026-08-05
CVE-2026-71214 NASA-AMMOS plandev - Client-Supplied session_variables Bypass Hasura-Origin Authorization in sequencing-server — plandev (sequencing-server) 9.8 Critical 2026-08-05
CVE-2026-71203 changedetection.io - Missing Authentication on /api/v1/full-spec Discloses Full OpenAPI Schema — changedetection.io 5.3 Medium 2026-08-05
CVE-2026-18810 H3C NX15 networkSetup missing authentication — NX15 7.3 High 2026-08-04
CVE-2026-70552 MaxSite CMS 109.5 Unauthenticated AJAX Dispatcher Bypass via ajax.php — MaxSite CMS 9.8 Critical 2026-08-04
CVE-2026-69703 Atlas-Livre Unauthenticated Access via Admin Controllers Missing Exit — Atals-Livre 9.8 Critical 2026-08-04
CVE-2026-58071 Veeam Service Provider Console 授权问题漏洞 — Service Provider Console 8.2 High 2026-08-04
CVE-2026-24079 Missing Authentication for Critical Function in Data Modem — Snapdragon 8.1 High 2026-08-04
CVE-2026-61514 Puwell IP Camera 2.x - 4.x Unauthenticated Access via TCP Port 23456 — IP Camera 9.8 Critical 2026-08-04
CVE-2026-59913 Dell Display and Peripheral Manager 授权问题漏洞 — Display and Peripheral Manager (DDPM Mac) 7.8 High 2026-08-03
CVE-2026-67610 OpenEMR 8.2.0 OAuth2 Dynamic Client Registration Unauthorized FHIR Access — openemr 8.1 High 2026-08-03
CVE-2026-41452 Krayin CRM 2.2.4 Missing Authentication via install/api/admin-config-setup — laravel-crm 9.8 Critical 2026-08-03
CVE-2026-69091 Admidio before 5.0.11 Authentication Bypass via forum.php — admidio 7.5 High 2026-08-03
CVE-2026-68578 ArcadeDB before 26.7.3 Authentication Bypass via MCP Transport — arcadedb 7.5 High 2026-08-02
CVE-2026-17348 pgAdmin 4: Missing authentication decorator on Constraints, preferences, Debugger and Schema Diff routes allows unauthenticated access in SERVER mode (incomplete fix for CVE-2026-12046) — pgAdmin 4 6.5 Medium 2026-07-31

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.