Weaknesses of type CWE-20

5,888 results

Validação inadequada de entrada

O software recebe dados do usuário ou de fontes externas, mas não verifica ou verifica de forma incompleta se esses dados têm as propriedades necessárias para processar com segurança. Isso permite que entradas malformadas, maliciosas ou inesperadas passem por controles e causem comportamentos indevidos — desde crashes até injeção de código.

Example

Uma aplicação web recebe um parâmetro numérico via GET, mas não valida se é realmente um número inteiro válido antes de usá-lo em uma consulta SQL. Um atacante envia um valor com caracteres especiais (ex: `1' OR '1'='1`), conseguindo injetar código SQL direto no banco de dados.

How to mitigate

Implemente validação rigorosa na entrada: defina o tipo, formato, comprimento e intervalo esperados; rejeite tudo que não se encaixe. Use listas de caracteres permitidos ('whitelist'), escape de dados para o contexto específico (SQL, HTML, URL) e bibliotecas de validação consolidadas. Nunca confie em dados do cliente.

CVE-2022-29613—Due to insufficient input validation, SAP Employee Self Service allows an authenticated attacker with user privileges to alter employee numbEPSS 0.8%CVE-2023-36406MEDIUMWindows Hyper-V Information Disclosure VulnerabilityEPSS 0.8%CVE-2023-32728MEDIUMCode injection in zabbix_agent2 smart.disk.get caused by smartctl pluginEPSS 0.8%CVE-2026-44300HIGHOpenCost ServiceKey Endpoint Unauthorized Credential Overwrite/InjectionEPSS 0.8%CVE-2022-3767HIGHMissing validation in DAST analyzer affecting all versions from 1.11.0 prior to 3.0.32, allows custom request headers to be sent with every EPSS 0.8%CVE-2024-25090MEDIUMApache Roller: Insufficient input validation for some user profile and bookmark fields when Roller in untested-users modeEPSS 0.8%CVE-2026-105426MEDIUMImproper input validation in Ivanti EPMM before version 12.11.0.0, 12.10.0.1, and 12.9.0.3 allows a remote authenticated attacker with adminEPSS 0.8%CVE-2025-29923LOWgo-redis allows potential out of order responses when `CLIENT SETINFO` times out during connection establishmentEPSS 0.8%CVE-2026-65637CRITICALApache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incompleteEPSS 0.8%CVE-2016-9494—Hughes high-performance broadband satellite modems, models HN7740S DW7000 HN7000S/SM, are potentially vulnerable to improper input validation, potentially leading to denial of serviceEPSS 0.8%CVE-2026-53503HIGHThumbor convolution filter allows divide-by-zero in C extension leading to remote DoSEPSS 0.8%CVE-2024-36471HIGHApache Allura: sensitive information exposure via DNS rebindingEPSS 0.8%CVE-2021-29507MEDIUMdlt-daemon could crash if there is special character in dlt.confEPSS 0.7%CVE-2024-23483HIGHLocal Privilege Escalation via lack of input validationEPSS 0.7%CVE-2022-29562LOWA vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.16.0), RUGGEDCOM ROX MX5000RE (All versions < V2.16.0), RUGGEEPSS 0.7%CVE-2023-24493MEDIUMA formula injection vulnerability exists in Tenable.sc due to improper validation of user-supplied input before returning it to users. An auEPSS 0.7%CVE-2022-41836HIGHBIG-IP Advanced WAF and ASM bd vulnerability CVE-2022-41836EPSS 0.7%CVE-2026-7755HIGHMCP Server Configuration Validator Bypass via File Upload APIEPSS 0.7%CVE-2017-3873—A vulnerability in the Plug-and-Play (PnP) subsystem of the Cisco Aironet 1800, 2800, and 3800 Series Access Points running a Lightweight AcEPSS 0.7%CVE-2025-40746CRITICALA vulnerability has been identified in SIMATIC RTLS Locating Manager (All versions < V3.2). Affected products do not properly validate inputEPSS 0.7%