Weaknesses of type CWE-20

5,416 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-2022-29479MEDIUMOn F5 BIG-IP 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all versions of 12.1EPSS 0.9%CVE-2022-36960HIGHSolarWinds Platform Improper Input ValidationEPSS 0.9%CVE-2022-46372HIGHAlotcer - AR7088H-A Authenticated Command executionEPSS 0.9%CVE-2023-20105CRITICALA vulnerability in the change password functionality of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) coulEPSS 0.9%CVE-2023-3894MEDIUMDOS in jackson-dataformats-textEPSS 0.9%CVE-2022-47188HIGHImproper Input Validation in Generex CS141EPSS 0.9%CVE-2021-43861HIGHIncorrect sanitisation function leads to `XSS`EPSS 0.9%CVE-2021-20302—A flaw was found in OpenEXR's TiledInputFile functionality. This flaw allows an attacker who can submit a crafted single-part non-image to bEPSS 0.9%CVE-2020-3474MEDIUMCisco IOS XE Software Web Management Framework VulnerabilitiesEPSS 0.9%CVE-2011-10020HIGHKaillera 0.86 Server DoS via Malformed UDP PacketEPSS 0.9%CVE-2017-6650—A vulnerability in the Telnet CLI command of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus Series Switches could allow EPSS 0.9%CVE-2023-0299HIGHImproper Input Validation in publify/publifyEPSS 0.9%CVE-2024-3385HIGHPAN-OS: Firewall Denial of Service (DoS) when GTP Security is DisabledEPSS 0.9%CVE-2022-39060CRITICALChangingTec MegaServiSignAdapter - Improper Input ValidationEPSS 0.9%CVE-2026-46452MEDIUMApache NimBLE: Mesh Proxy SAR reassembly unbounded append and unchecked failureEPSS 0.9%CVE-2021-3911MEDIUMMisconfigured IP address field in ROA leads to OctoRPKI crashEPSS 0.9%CVE-2023-42449HIGHMalicious head initialiser can extract PTs from control of Hydra scripts, leading to locked participant commits or spoofed commitsEPSS 0.9%CVE-2026-27953HIGHormar has a Pydantic Validation Bypass via Kwargs Injection in Model ConstructorEPSS 0.9%CVE-2022-47378MEDIUMCODESYS: Multiple products prone to Improper Input ValidationEPSS 0.9%CVE-2023-46285HIGHA vulnerability has been identified in Opcenter Execution Foundation (All versions < V2407), Opcenter Quality (All versions < V2312), SIMATIEPSS 0.9%