Weaknesses of type CWE-20

5,889 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-2026-58183HIGHApache Traffic Server: prefetch plugin can crash on attacker-influenced inputEPSS 0.7%CVE-2024-27201MEDIUMAn improper input validation vulnerability exists in the OAS Engine User Configuration functionality of Open Automation Software OAS PlatforEPSS 0.7%CVE-2023-29410HIGH A CWE-20: Improper Input Validation vulnerability exists that could allow an authenticated attacker to gain the same privilege as the appliEPSS 0.7%CVE-2021-26251MEDIUMImproper input validation in the Intel(R) Distribution of OpenVINO(TM) Toolkit may allow an authenticated user to potentially enable denial EPSS 0.7%CVE-2023-21494MEDIUMPotential buffer overflow vulnerability in auth api in mm_Authentication.c in Shannon baseband prior to SMR May-2023 Release 1 allows remoteEPSS 0.7%CVE-2026-115915HIGHvLLM: Untrusted EPS inputs can trigger denial of service or Ghostscript RCEEPSS 0.7%CVE-2026-46457HIGHApache Camel: Camel-NATS: Inbound NATS message headers are mapped into the Exchange without a configured HeaderFilterStrategy, allowing a client that can publish to the subject to inject Camel control headersEPSS 0.7%CVE-2022-39016HIGHJavascript injection in PDFtron in M-Files HubshareEPSS 0.7%CVE-2020-3319LOWCisco Webex Network Recording Player and Cisco Webex Player Denial of Service VulnerabilityEPSS 0.7%CVE-2021-0208HIGHJunos OS and Junos OS Evolved: In bidirectional LSP configurations, on MPLS egress router RPD may core upon receipt of specific malformed RSVP packet.EPSS 0.7%CVE-2020-3322LOWCisco Webex Network Recording Player and Cisco Webex Player Denial of Service VulnerabilityEPSS 0.7%CVE-2024-28103MEDIUMAction Pack is missing security headers on non-HTML responsesEPSS 0.7%CVE-2024-23668HIGHAn improper authorization in Fortinet FortiWebManager 7.2.0, FortiWebManager 7.0.0 through 7.0.4, FortiWebManager 6.3.0, FortiWebManager 6.2EPSS 0.7%CVE-2023-20530HIGHInsufficient input validation of BIOS mailbox messages in SMU may result in out-of-bounds memory reads potentially resulting in a denial of EPSS 0.7%CVE-2023-20522HIGHInsufficient input validation in ASP may allow an attacker with a malicious BIOS to potentially cause a denial of service. EPSS 0.7%CVE-2023-20192CRITICALCisco Expressway Series and Cisco TelePresence Video Communication Server Privilege Escalation VulnerabilitiesEPSS 0.7%CVE-2022-36392HIGHImproper input validation in some firmware for Intel(R) AMT and Intel(R) Standard Manageability before versions 11.8.94, 11.12.94, 11.22.94,EPSS 0.7%CVE-2022-40237MEDIUMIBM MQ for HPE NonStop denial of serviceEPSS 0.7%CVE-2023-32037MEDIUMWindows Layer-2 Bridge Network Driver Information Disclosure VulnerabilityEPSS 0.7%CVE-2022-39338LOWStored cross site scripting (XSS) vulnerability via Authorization Endpoint in user_oidcEPSS 0.7%