Weaknesses of type CWE-20

5,423 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-2026-75686CRITICALAdobe Connect | Improper Input Validation (CWE-20)EPSS 0.6%CVE-2024-3493HIGHRockwell Automation ControlLogix and GaurdLogix Vulnerable to Major Nonrecoverable Fault Due to Invalid Header ValueEPSS 0.6%CVE-2024-1243CRITICALRemote code execution and local privilege escalation in Wazuh Windows agent via NetNTLMv2 hash theftEPSS 0.6%CVE-2023-0751MEDIUMGELI silently omits the keyfile if read from stdinEPSS 0.6%CVE-2024-11737CRITICALCWE-20: Improper Input Validation vulnerability exists that could lead to a denial of service and a loss of confidentiality, integrity of thEPSS 0.6%CVE-2026-31900HIGHBlack's vulnerable version parsing leads to RCE in GitHub ActionEPSS 0.6%CVE-2023-27487HIGHEnvoy client may fake the header `x-envoy-original-path`EPSS 0.6%CVE-2026-56398HIGHOpen WebUI - Stored Cross-Site Scripting via OAuth Picture Claim SVG Data URIEPSS 0.6%CVE-2022-43563HIGHRisky command safeguards bypass via rex search command field names in Splunk EnterpriseEPSS 0.6%CVE-2022-43565HIGHRisky command safeguards bypass via ‘tstats command JSON in Splunk EnterpriseEPSS 0.6%CVE-2023-41336MEDIUMPrevent injection of invalid entity ids for "autocomplete" fields in symfony ux-autocompleteEPSS 0.6%CVE-2024-20484HIGHCisco Enterprise Chat and Email Denial of Service VulnerabilityEPSS 0.6%CVE-2026-58624MEDIUMApache MINA SSHD: Remote execution of JGit commands can write files on the serverEPSS 0.6%CVE-2019-19163HIGHCommax WallPad Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-22868HIGHgo-ethereum has a DoS via malicious p2p messageEPSS 0.6%CVE-2026-45685HIGHOpenTelemetry eBPF Instrumentation: MongoDB parser panics on malformed wire messagesEPSS 0.6%CVE-2024-20271HIGHA vulnerability in the IP packet processing of Cisco Access Point (AP) Software could allow an unauthenticated, remote attacker to cause a dEPSS 0.6%CVE-2023-28732MEDIUMMissing access control affecting the AcyMailing plugin for JoomlaEPSS 0.6%CVE-2022-39338LOWStored cross site scripting (XSS) vulnerability via Authorization Endpoint in user_oidcEPSS 0.6%CVE-2026-25722HIGHClaude Code Vulnerable to Command Injection via Directory Change Bypasses Write ProtectionEPSS 0.6%