Falhas do tipo CWE-20

5.439 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-2026-2898MEDIUMfunadmin Backend Endpoint AuthCloudService.php getMember deserializationEPSS 0.4%CVE-2024-47866HIGHRGW DoS attack with empty HTTP header in S3 object copyEPSS 0.4%CVE-2025-15284MEDIUMarrayLimit bypass in bracket notation allows DoS via memory exhaustionEPSS 0.4%CVE-2026-59650CRITICALMTI/A0 DH agreement exponentiates unvalidated peer valueEPSS 0.4%CVE-2026-8959CRITICALSandbox escape due to incorrect boundary conditions in the Widget: Win32 componentEPSS 0.4%CVE-2020-3556HIGHCisco AnyConnect Secure Mobility Client Arbitrary Code Execution VulnerabilityEPSS 0.4%CVE-2026-85239HIGHMISP Event Template Definition Validation Bypass Allows Persistent Denial of ServiceEPSS 0.4%CVE-2026-33758CRITICALOpenBao has Reflected XSS in its OIDC authentication error messageEPSS 0.4%CVE-2026-56722MEDIUMDompdf: Local file read due to improper file path validation in SVG images encoded as data-URIEPSS 0.4%CVE-2025-40836HIGHEricsson Indoor Connect 8855 - Improper Input Validation VulnerabilityEPSS 0.4%CVE-2026-40871HIGHmailcow: dockerized vulnerable to Second Order SQL Injection in quarantine category via APIEPSS 0.4%CVE-2026-42459HIGHfree5GC: Improper Input Validation and Generation of Error Message Containing Sensitive Information in github.com/free5gc/udmEPSS 0.4%CVE-2023-39404—Vulnerability of input parameter verification in certain APIs in the window management module. Successful exploitation of this vulnerabilityEPSS 0.4%CVE-2023-39390—Vulnerability of input parameter verification in certain APIs in the window management module. Successful exploitation of this vulnerabilityEPSS 0.4%CVE-2026-17109MEDIUMIBM i is Affected By Multiple Vulnerabilities in SQLEPSS 0.4%CVE-2022-30786MEDIUMA crafted NTFS image can cause a heap-based buffer overflow in ntfs_names_full_collate in NTFS-3G through 2021.8.22.EPSS 0.4%CVE-2023-39382— Input verification vulnerability in the audio module. Successful exploitation of this vulnerability may cause virtual machines (VMs) to resEPSS 0.4%CVE-2022-30789MEDIUMA crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G through 2021.8.22.EPSS 0.4%CVE-2025-6545CRITICALpbkdf2 silently returns predictable uninitialized/zero-filled memory for non-normalized or unimplemented algos supported by Node.jsEPSS 0.4%CVE-2023-37241—Input verification vulnerability in the WMS API. Successful exploitation of this vulnerability may cause the device to restart.EPSS 0.4%