Falhas do tipo CWE-20

5.421 resultados

Validação inadequada de entrada

A aplicação recebe dados do usuário ou de fontes externas mas não valida (ou valida mal) se esses dados têm as propriedades necessárias para processamento seguro. Isso abre porta para injeção de código, buffer overflow, lógica corrompida e outros ataques que exploram dados malformados ou maliciosos.

Exemplo

Um formulário web aceita um CPF sem verificar se tem 11 dígitos numéricos, ou um app móvel recebe um ID de usuário em JSON sem confirmar se é um inteiro — atacantes exploram isso para acessar dados de outros usuários, executar queries SQL maliciosas ou causar erro de processamento.

Como mitigar

Implemente validação rigorosa na entrada: verifique tipo, comprimento, formato, intervalo de valores permitidos. Use whitelist (aceitar só o que você sabe ser seguro) em vez de blacklist. Valide tanto no cliente quanto no servidor, e use bibliotecas de parsing seguro para formatos complexos (XML, JSON).

CVE-2026-31378MEDIUMApache OFBiz: JSON Attribute Override and URL Allowlist Bypass Leads to Remote Code ExecutionEPSS 0.7%CVE-2023-20270MEDIUMA vulnerability in the interaction between the Server Message Block (SMB) protocol preprocessor and the Snort 3 detection engine for Cisco FEPSS 0.7%CVE-2024-4142CRITICALJFrog Artifactory Improper input validation within token creation flowEPSS 0.7%CVE-2024-36226LOWAdobe Experience Manager | Improper Input Validation (CWE-20)EPSS 0.7%CVE-2024-38307HIGHImproper input validation in the firmware for some Intel(R) AMT and Intel(R) Standard Manageability may allow an authenticated user to potenEPSS 0.7%CVE-2020-3465HIGHCisco IOS XE Software Ethernet Frame Denial of Service VulnerabilityEPSS 0.7%CVE-2026-46334HIGHOpenSIPS: Denial of Service in SDP bandwidth parsing via QoS SDP cloningEPSS 0.7%CVE-2022-22184HIGHJunos OS and Junos OS Evolved: A BGP session will flap upon receipt of a specific, optional transitive attribute in version 22.3R1EPSS 0.7%CVE-2026-73552HIGHEnvoy: HTTP RBAC safe_regex can fail open on RFC-valid obs-text header valuesEPSS 0.7%CVE-2025-2690MEDIUMyiisoft Yii2 MockClass.php generate deserializationEPSS 0.7%CVE-2020-3116MEDIUMCisco Webex Centers Denial of Service VulnerabilityEPSS 0.7%CVE-2026-59568CRITICALRemote Code ExecutionEPSS 0.7%CVE-2023-34390MEDIUM Improper input validation could lead to denial of serviceEPSS 0.7%CVE-2026-69192HIGHip-address: Address4 decodes leading-zero octets as decimal while resolvers decode them as octal, allowing SSRF and trust-boundary bypassEPSS 0.7%CVE-2026-81180HIGHSysReptor: Authenticated RCE by insecure image processingEPSS 0.7%CVE-2026-16723CRITICALRemote Code Execution in fastjson 1.2.68–1.2.83EPSS 0.7%CVE-2025-34226HIGHOpenPLC Runtime v3 Persistent DoSEPSS 0.7%CVE-2024-21473CRITICALImproper Input Validation in WIN SONEPSS 0.7%CVE-2026-24713CRITICALApache IoTDB: JEXL Expression Injection VulnerabilityEPSS 0.7%CVE-2024-27201MEDIUMAn improper input validation vulnerability exists in the OAS Engine User Configuration functionality of Open Automation Software OAS PlatforEPSS 0.7%