Fallos del tipo CWE-20

5439 resultados

Validação inadequada de entrada

A aplicação recebe dados de fontes externas (usuário, API, arquivo) sem verificar se estão no formato, tamanho ou tipo esperado antes de usá-los. Isso permite que um atacante envie dados malformados ou maliciosos que podem causar erros, corrupção de dados, execução de código ou acesso não autorizado.

Ejemplo

Um formulário que aceita um número de idade sem validar se é um inteiro positivo entre 0 e 150. Um atacante envia idade=-5 ou idade='DROP TABLE users;' via SQL, e o código processa isso diretamente no banco sem sanitização, causando dano.

Cómo mitigar

Valide TODA entrada externa: verificar tipo, tamanho, formato e intervalo permitido antes de usar. Use whitelists (aceitar apenas valores conhecidos como seguros) em vez de blacklists, e aplique sanitização ou prepared statements para dados que vão em queries. Testes de entrada fuzzing também ajudam a encontrar gaps.

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-2022-35970MEDIUMSegfault in `QuantizedInstanceNorm` in TensorFlowEPSS 0.5%CVE-2022-35979MEDIUMSegfault in `QuantizedRelu` and `QuantizedRelu6`EPSS 0.5%CVE-2022-35973MEDIUMSegfault in `QuantizedMatMul` in TensorFlowEPSS 0.5%CVE-2026-11736LOWStack-based buffer overflow vulnerability in some NETGEAR Nighthawk routersEPSS 0.5%CVE-2026-48109HIGHMessagePack-CSharp: LZ4 decompression may fail with AccessViolationException after dereferencing memory from bad inputEPSS 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-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-2026-40162HIGHBugsink affected by authenticated arbitrary file write in artifactbundle/assembleEPSS 0.5%CVE-2022-51010HIGHPocketMine-MP before 4.4.2 Server Crash via Item IDEPSS 0.5%CVE-2022-51013HIGHPocketMine-MP before 4.2.3 Denial of Service via NBT MetadataEPSS 0.5%CVE-2022-51012HIGHPocketMine-MP before 4.2.9 Denial of Service via NBT DeserializationEPSS 0.5%CVE-2026-95703MEDIUMMISP OrganisationsController File Existence and Image-Type Oracle via Forged Upload tmp_nameEPSS 0.5%CVE-2026-82639HIGHNextChat 2.15.8 through 2.16.1 OpenAI API Key DisclosureEPSS 0.5%CVE-2026-94383HIGHMISP Blocklist Workflow Module: Arbitrary Script Execution via Unrestricted File ExtensionEPSS 0.5%CVE-2020-3497HIGHCisco 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%