Weaknesses of type CWE-20

5,419 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-2024-38043HIGHPowerShell Elevation of Privilege VulnerabilityEPSS 0.7%CVE-2024-2427HIGHRockwell Automation - Denial-of-service and Input Validation Vulnerabilities in PowerFlex® 527EPSS 0.7%CVE-2021-3612—An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the useEPSS 0.7%CVE-2021-33113HIGHImproper input validation for some Intel(R) PROSet/Wireless WiFi in multiple operating systems and Killer(TM) WiFi in Windows 10 and 11 may EPSS 0.7%CVE-2023-4241HIGHlol-html panics on certain HTML inputsEPSS 0.7%CVE-2024-25997MEDIUMPHOENIX CONTACT: Log injection in CHARX SeriesEPSS 0.7%CVE-2019-14866MEDIUMIn all versions of cpio before 2.13 does not properly validate input files when generating TAR archives. When cpio is used to create TAR arcEPSS 0.7%CVE-2025-29821MEDIUMMicrosoft Dynamics Business Central Information Disclosure VulnerabilityEPSS 0.7%CVE-2023-22835HIGHDenial of Service in Foundry IssuesEPSS 0.7%CVE-2026-39868CRITICALThis issue was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2EPSS 0.7%CVE-2025-1186MEDIUMdayrui XunRuiCMS Api.php deserializationEPSS 0.7%CVE-2026-53587HIGHlibgit2 - Unauthenticated network-reachable heap out-of-bounds read in transports/smart_pkt.c:set_dataEPSS 0.7%CVE-2023-38060MEDIUMHost header injection by attachments in web serviceEPSS 0.7%CVE-2022-47917MEDIUMCVE-2022-47917EPSS 0.7%CVE-2026-49086MEDIUMApache Camel Dapr: Pub/Sub consumer copied the inbound CloudEvent's pub/sub-name and topic into producer-direction routing headers, allowing an actor who can publish to the subscribed topic to influence internal behaviourEPSS 0.7%CVE-2026-86683HIGHBroken Authentication VulnerabilityEPSS 0.7%CVE-2026-9213MEDIUMInsufficient input validation in certain NETGEAR routersEPSS 0.7%CVE-2020-3199HIGHCisco IOx Application Environment for IOS Software for Cisco Industrial Routers VulnerabilitiesEPSS 0.7%CVE-2024-26126LOWAdobe Experience Manager | Improper Input Validation (CWE-20)EPSS 0.7%CVE-2026-61363HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 0.7%