Weaknesses of type CWE-20

5,429 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-2026-2555LOWJeecgBoot Retrieval-Augmented Generation AiragKnowledgeController.java importDocumentFromZip deserializationEPSS 0.6%CVE-2023-32484CRITICAL Dell Networking Switches running Enterprise SONiC versions 4.1.0, 4.0.5, 3.5.4 and below contains an improper input validation vulnerabilitEPSS 0.6%CVE-2026-59955HIGHApollo ConfigService access key authentication bypass via raw config file appId parsingEPSS 0.6%CVE-2026-1691MEDIUMbolo-solo SnakeYAML BackupService.java importMarkdownsSync deserializationEPSS 0.6%CVE-2026-59954HIGHApollo ConfigService access key authentication bypass via appId parsing and non-canonical matchingEPSS 0.6%CVE-2025-43494HIGHA mail header parsing issue was addressed with improved checks. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.EPSS 0.6%CVE-2024-21544HIGHVersions of the package spatie/browsershot before 5.0.1 are vulnerable to Improper Input Validation due to improper URL validation in the seEPSS 0.6%CVE-2024-38359MEDIUMLightning Network Daemon Onion BombEPSS 0.6%CVE-2024-42531CRITICALEzviz Internet PT Camera CS-CV246 D15655150 allows an unauthenticated host to access its live video stream by crafting a set of RTSP packetsEPSS 0.6%CVE-2025-43458MEDIUMThis issue was addressed through improved state management. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iEPSS 0.6%CVE-2020-3486HIGHCisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service VulnerabilitiesEPSS 0.6%CVE-2026-35433HIGH.NET Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2022-23549MEDIUMDiscourse vulnerable to bypass of post max_length using HTML commentsEPSS 0.6%CVE-2023-29454MEDIUMPersistent XSS in the user formEPSS 0.6%CVE-2024-52815HIGHSynapse allows a a malformed invite to break the invitee's `/sync`EPSS 0.6%CVE-2026-32177HIGH.NET Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2026-21247HIGHWindows Hyper-V Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-54204HIGHTeamDavid: Server-Side Request Forgery (SSRF) via 'pathnameroot' parameter in search functionalityEPSS 0.6%CVE-2023-0683HIGHA valid, authenticated XCC user with read only access may gain elevated privileges through a specifically crafted API call.EPSS 0.6%CVE-2023-33964HIGHmx-chain-go does not treat invalid transaction with wrong username correctlyEPSS 0.6%