Weaknesses of type CWE-20

5,393 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-2023-35797CRITICALApache Airflow Hive Provider Beeline RCE with PrincipalEPSS 2.8%CVE-2022-41942HIGHSourcegraph vulnerable to Comand Injection via gitserverEPSS 2.8%CVE-2023-35349CRITICALMicrosoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityEPSS 2.8%CVE-2025-50578CRITICALLinuxServer.io heimdall 2.6.3-ls307 contains a vulnerability in how it handles user-supplied HTTP headers, specifically `X-Forwarded-Host` aEPSS 2.8%CVE-2018-10927HIGHA flaw was found in RPC request using gfs3_lookup_req in glusterfs server. An authenticated attacker could use this flaw to leak informationEPSS 2.8%CVE-2018-0371—A vulnerability in the Web Admin Interface of Cisco Meeting Server could allow an authenticated, remote attacker to cause a denial of servicEPSS 2.8%CVE-2019-1741HIGHCisco IOS XE Software Encrypted Traffic Analytics Denial of Service VulnerabilityEPSS 2.8%CVE-2019-11687HIGHAn issue was discovered in the DICOM Part 10 File Format in the NEMA DICOM Standard 1995 through 2019b and continuing in current implementatEPSS 2.8%CVE-2014-2357—SUBNET SubSTATION Server 2 Telegyr 8979 Master Protocol Improper Input ValidationEPSS 2.8%CVE-2022-26781CRITICALMultiple improper input validation vulnerabilities exists in the libnvram.so nvram_import functionality of InHand Networks InRouter302 V3.5.EPSS 2.8%CVE-2024-0057CRITICALNET, .NET Framework, and Visual Studio Security Feature Bypass VulnerabilityEPSS 2.8%CVE-2019-1710CRITICALCisco IOS XR 64-Bit Software for Cisco ASR 9000 Series Aggregation Services Routers Network Isolation VulnerabilityEPSS 2.8%CVE-2018-12547—In Eclipse OpenJ9, prior to the 0.12.0 release, the jio_snprintf() and jio_vsnprintf() native methods ignored the length parameter. This affEPSS 2.7%CVE-2024-38095HIGH.NET and Visual Studio Denial of Service VulnerabilityEPSS 2.7%CVE-2021-22767CRITICALA CWE-20: Improper Input Validation vulnerability exists in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All VersionsEPSS 2.7%CVE-2021-22768CRITICALA CWE-20: Improper Input Validation vulnerability exists in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All VersionsEPSS 2.7%CVE-2021-22765CRITICALA CWE-20: Improper Input Validation vulnerability exists in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All VersionsEPSS 2.7%CVE-2023-40062HIGHIncomplete List of Disallowed Inputs Remote Code Execution VulnerabilityEPSS 2.7%CVE-2023-47804—Apache OpenOffice: Macro URL arbitrary script executionEPSS 2.7%CVE-2020-15086CRITICALPotential Remote Code Execution in TYPO3 with mediace extensionEPSS 2.7%