Falhas do tipo CWE-20

5.429 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-2026-28936HIGHThe issue was addressed with improved checks. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 1EPSS 0.5%CVE-2022-35982MEDIUMSegfault in `SparseBincount` in TensorFlowEPSS 0.5%CVE-2026-48109HIGHMessagePack-CSharp: LZ4 decompression may fail with AccessViolationException after dereferencing memory from bad inputEPSS 0.5%CVE-2020-3538MEDIUMCisco Data Center Network Manager Path Traversal VulnerabilityEPSS 0.5%CVE-2025-5498MEDIUMslackero phpwcms Custom Source Tab cnt21.readform.inc.php is_file deserializationEPSS 0.5%CVE-2026-11736LOWStack-based buffer overflow vulnerability in some NETGEAR Nighthawk routersEPSS 0.5%CVE-2018-1047—A flaw was found in Wildfly 9.x. A path traversal vulnerability through the org.wildfly.extension.undertow.deployment.ServletResourceManagerEPSS 0.5%CVE-2026-94383HIGHMISP Blocklist Workflow Module: Arbitrary Script Execution via Unrestricted File ExtensionEPSS 0.5%CVE-2022-51010HIGHPocketMine-MP before 4.4.2 Server Crash via Item IDEPSS 0.5%CVE-2026-40162HIGHBugsink affected by authenticated arbitrary file write in artifactbundle/assembleEPSS 0.5%CVE-2022-51013HIGHPocketMine-MP before 4.2.3 Denial of Service via NBT MetadataEPSS 0.5%CVE-2026-95703MEDIUMMISP OrganisationsController File Existence and Image-Type Oracle via Forged Upload tmp_nameEPSS 0.5%CVE-2022-51012HIGHPocketMine-MP before 4.2.9 Denial of Service via NBT DeserializationEPSS 0.5%CVE-2026-82639HIGHNextChat 2.15.8 through 2.16.1 OpenAI API Key DisclosureEPSS 0.5%CVE-2020-3489HIGHCisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service VulnerabilitiesEPSS 0.5%CVE-2019-12676HIGHCisco Adaptive Security Appliance Software and Firepower Threat Defense Software OSPF LSA Processing Denial of Service VulnerabilityEPSS 0.5%CVE-2020-3493HIGHCisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service VulnerabilitiesEPSS 0.5%CVE-2020-3488HIGHCisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service VulnerabilitiesEPSS 0.5%CVE-2023-27493HIGHEnvoy doesn't escape HTTP header valuesEPSS 0.5%CVE-2020-3497HIGHCisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service VulnerabilitiesEPSS 0.5%