Weaknesses of type CWE-20

5,888 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-2022-43563HIGHRisky command safeguards bypass via rex search command field names in Splunk EnterpriseEPSS 0.8%CVE-2022-43565HIGHRisky command safeguards bypass via ‘tstats command JSON in Splunk EnterpriseEPSS 0.8%CVE-2025-68398CRITICALWeblate has git config file overwrite vulnerability that leads to remote code executionEPSS 0.8%CVE-2024-32672MEDIUMA Segmentation Fault issue discovered in Samsung Open Source Escargot JavaScript engine allows remote attackers to cause a denial of serEPSS 0.8%CVE-2026-46456CRITICALApache Camel: Camel-AWS2-SQS: Inbound message attributes are mapped into the Exchange without an inbound HeaderFilterStrategy, allowing a message sender to inject Camel control headersEPSS 0.8%CVE-2024-30258HIGHFastDDS crash when publisher send malformed packetEPSS 0.8%CVE-2021-41168MEDIUMHash-Collision Denial-of-Service Vulnerability in snudownEPSS 0.8%CVE-2024-38055MEDIUMMicrosoft Windows Codecs Library Information Disclosure VulnerabilityEPSS 0.8%CVE-2025-53939MEDIUMKiteworks Core is vulnerable to Improper Input ValidationEPSS 0.8%CVE-2026-21279HIGHColdFusion | Improper Input Validation (CWE-20)EPSS 0.8%CVE-2022-31170HIGH OpenZeppelin Contracts's ERC165Checker may revert instead of returning falseEPSS 0.8%CVE-2018-0395HIGHCisco FXOS and NX-OS Software Link Layer Discovery Protocol Denial of Service VulnerabilityEPSS 0.8%CVE-2024-23655HIGHAttacker can prevent users from accessing received emailsEPSS 0.8%CVE-2026-99999CRITICALipv4: validate checksum_start before completing checksumEPSS 0.8%CVE-2019-12694MEDIUMCisco Firepower Threat Defense Software Command Injection VulnerabilityEPSS 0.8%CVE-2026-19480HIGHCAI Content Credentials | Improper Input Validation (CWE-20)EPSS 0.8%CVE-2024-41120CRITICALstreamlit-geospatial blind SSRF in pages/9_🔲_Vector_Data_Visualization.pyEPSS 0.8%CVE-2023-25533HIGHNVIDIA DGX H100 BMC contains a vulnerability in the web UI, where an attacker may cause improper input validation. A successful exploit of tEPSS 0.8%CVE-2024-6239HIGHPoppler: pdfinfo: crash in broken documents when using -dests parameterEPSS 0.8%CVE-2026-59878HIGHApache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All: AMQP NIO negative frame size validation bypass leading to DoSEPSS 0.8%