Weaknesses of type CWE-20

5,887 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-2021-44530—An injection vulnerability exists in a third-party library used in UniFi Network Version 6.5.53 and earlier (Log4J CVE-2021-44228) allows a EPSS 1.1%CVE-2022-46836CRITICALPHP code injection in watolibEPSS 1.1%CVE-2020-29507MEDIUMDell BSAFE Crypto-C Micro Edition, versions before 4.1.4, and Dell BSAFE Micro Edition Suite, versions before 4.4, contain an Improper InputEPSS 1.1%CVE-2026-48316CRITICALColdFusion | Improper Input Validation (CWE-20)EPSS 1.1%CVE-2018-19945—Improper Limitation of a Pathname to a Restricted Directory in QTSEPSS 1.1%CVE-2021-32697MEDIUMForm validation can be skippedEPSS 1.1%CVE-2025-12945LOWImproper input validation in NETGEAR Nighthawk router R7000PEPSS 1.1%CVE-2026-20812MEDIUMLDAP Tampering VulnerabilityEPSS 1.1%CVE-2016-8631MEDIUMThe OpenShift Enterprise 3 router does not properly sort routes when processing newly added routes. An attacker with access to create routesEPSS 1.1%CVE-2023-22934HIGHSPL Command Safeguards Bypass via the ‘pivot’ SPL Command in Splunk EnterpriseEPSS 1.1%CVE-2022-27655—When a user opens a manipulated Universal 3D (.u3d, 3difr.x3d) received from untrusted sources in SAP 3D Visual Enterprise Viewer - version EPSS 1.1%CVE-2022-27654—When a user opens a manipulated Photoshop Document (.psd, 2d.x3d) received from untrusted sources in SAP 3D Visual Enterprise Viewer - versiEPSS 1.1%CVE-2023-3705HIGHInformation Disclosure Vulnerability in CP-Plus Network Video RecorderEPSS 1.1%CVE-2020-7518—A CWE-20: Improper input validation vulnerability exists in Easergy Builder (Version 1.4.7.2 and older) which could allow an attacker to modEPSS 1.1%CVE-2023-26281MEDIUMIBM HTTP Server denial of serviceEPSS 1.1%CVE-2026-20856HIGHWindows Server Update Service (WSUS) Remote Code Execution VulnerabilityEPSS 1.1%CVE-2018-15429—Cisco HyperFlex HX Data Platform Software Unauthorized Directory Access VulnerabilityEPSS 1.1%CVE-2025-48913CRITICALApache CXF: Untrusted JMS configuration can lead to RCEEPSS 1.1%CVE-2022-21796CRITICALA memory corruption vulnerability exists in the netserver parse_command_list functionality of reolink RLC-410W v3.0.0.136_20121102. A speciaEPSS 1.1%CVE-2023-48631MEDIUMDenial of Service of regular expression in package @adobe/css-toolsEPSS 1.1%