Weaknesses of type CWE-306

3,091 results

Ausência de autenticação em funcionalidades críticas

A aplicação oferece funcionalidades sensíveis ou que consomem recursos significativos (processamento pesado, armazenamento, transações) sem verificar a identidade do usuário. Qualquer pessoa, autenticada ou não, consegue acessar e executar essas operações, comprometendo confidencialidade, integridade e disponibilidade.

Example

Um serviço de geração de relatórios expõe um endpoint `/api/gerar-relatorio` que não valida token JWT ou sessão — um atacante consegue disparar dezenas de requisições simultâneas, sobrecarregando o servidor, ou acessar dados de outros clientes sem se identificar.

How to mitigate

Implemente autenticação obrigatória antes de qualquer operação sensível (valide token, sessão ou credenciais). Para APIs, use OAuth2/JWT com verificação no início da requisição; para aplicações web, enforce sessão válida. Combine com rate limiting e quotas por usuário para conter abuso de recursos.

CVE-2021-43447HIGHONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control. An authentication bypass in the document editor allows attEPSS 1.3%CVE-2022-26043HIGHAn external config control vulnerability exists in the OAS Engine SecureAddSecurity functionality of Open Automation Software OAS Platform VEPSS 1.3%CVE-2022-26303HIGHAn external config control vulnerability exists in the OAS Engine SecureAddUser functionality of Open Automation Software OAS Platform V16.0EPSS 1.3%CVE-2022-27645HIGHThis vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700v3 routers. AuthentiEPSS 1.3%CVE-2022-41331CRITICALA missing authentication for critical function vulnerability [CWE-306] in FortiPresence infrastructure server before version 1.2.1 allows a EPSS 1.3%CVE-2019-6820HIGHA CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IPEPSS 1.3%CVE-2026-72577CRITICALNASA fprime-gds - Missing Authentication and Path Traversal Enable Unauthenticated RCE and Spacecraft Command InjectionEPSS 1.3%CVE-2025-48814HIGHRemote Desktop Licensing Service Security Feature Bypass VulnerabilityEPSS 1.3%CVE-2023-47674CRITICALMissing authentication for critical function vulnerability in First Corporation's DVRs allows a remote unauthenticated attacker to rewrite oEPSS 1.3%CVE-2026-27604CRITICALFOSSBilling: Improper API Role Validation (system) Enables Unauthenticated Access to Privileged Admin FunctionsEPSS 1.3%CVE-2026-33231HIGHNLTK has unauthenticated remote shutdown in nltk.app.wordnet_appEPSS 1.3%CVE-2026-9317CRITICALNango < 0.71.6 Missing Authentication RCE via runner tRPC serverEPSS 1.3%CVE-2022-32251HIGHA vulnerability has been identified in SINEMA Remote Connect Server (All versions < V3.1). There is a missing authentication verification foEPSS 1.3%CVE-2023-28326CRITICALApache OpenMeetings: allows user impersonationEPSS 1.3%CVE-2026-23693CRITICALElementsKit Elementor Addons < 3.7.9 Unauthenticated Mailchimp REST EndpointEPSS 1.3%CVE-2019-13525—In IP-AK2 Access Control Panel Version 1.04.07 and prior, the integrated web server of the affected devices could allow remote attackers to EPSS 1.3%CVE-2026-20803HIGHMicrosoft SQL Server Elevation of Privilege VulnerabilityEPSS 1.2%CVE-2020-12505HIGHWAGO: Vulnerability in web-based authentication in WAGO 750-8XX Version <= FW07EPSS 1.2%CVE-2025-36535CRITICALAutomationDirect MB-Gateway Missing Authentication for Critical FunctionEPSS 1.2%CVE-2020-10038—A vulnerability has been identified in SICAM MMU (All versions < V2.05), SICAM SGU (All versions), SICAM T (All versions < V2.18). An attackEPSS 1.2%