Falhas do tipo CWE-20

5.887 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-2023-32695HIGHInsufficient validation when decoding a Socket.IO packetEPSS 1.1%CVE-2021-22288HIGHSECURITY – Denial of Service Vulnerabilities in SPIET800 INFI-Net to Ethernet Transfer module and PNI800 S+ Ethernet communication interface moduleEPSS 1.1%CVE-2013-4144—There is an object injection vulnerability in swfupload plugin for wordpress.EPSS 1.1%CVE-2021-22286HIGHSECURITY – Denial of Service Vulnerabilities in SPIET800 INFI-Net to Ethernet Transfer module and PNI800 S+ Ethernet communication interface moduleEPSS 1.1%CVE-2025-27151MEDIUMredis-check-aof may lead to stack overflow and potential RCEEPSS 1.1%CVE-2023-42802CRITICALGLPI vulnerable to unallowed PHP script executionEPSS 1.1%CVE-2024-38033HIGHPowerShell Elevation of Privilege VulnerabilityEPSS 1.1%CVE-2021-26631HIGHMangboard parameter modulation vulnerabilityEPSS 1.1%CVE-2023-38727MEDIUMIBM Db2 denial of serviceEPSS 1.1%CVE-2023-29258MEDIUMIBM Db2 denial of serviceEPSS 1.1%CVE-2023-40687MEDIUMIBM Db2 denial of serviceEPSS 1.1%CVE-2021-23278HIGHArbitrary File deleteEPSS 1.1%CVE-2024-20003HIGHIn Modem NL1, there is a possible system crash due to an improper input validation. This could lead to remote denial of service, if NW sent EPSS 1.1%CVE-2025-43234CRITICALMultiple memory corruption issues were addressed with improved input validation. This issue is fixed in iOS 18.6 and iPadOS 18.6, macOS SequEPSS 1.1%CVE-2019-10134MEDIUMA flaw was found in Moodle before 3.7, 3.6.4, 3.5.6, 3.4.9 and 3.1.18. The size of users' private file uploads via email were not correctly EPSS 1.1%CVE-2021-26605HIGHunidocs ezPDFReader arbitrary command execution vulnerabilityEPSS 1.0%CVE-2024-36053CRITICALIn the mintupload package through 4.2.0 for Linux Mint, service-name mishandling leads to command injection via shell metacharacters in checEPSS 1.0%CVE-2022-39318MEDIUMDivision by zero in urbdrc channel in FreeRDPEPSS 1.0%CVE-2026-40176HIGHComposer is vulnerable to Command Injection via Malicious Perforce RepositoryEPSS 1.0%CVE-2023-51747HIGHSMTP smuggling in Apache JamesEPSS 1.0%