Weaknesses of type CWE-20

5,439 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-2026-37458MEDIUMMissing input validation in the MP_REACH_NLRI component of FRRouting (FRR) stable/10.0 to stable/10.6 allows authenticated attackers to causEPSS 0.4%CVE-2026-21675CRITICALiccDEV has a Use After Free vulnerability in CIccCmm class via improper hint manager object deletionEPSS 0.4%CVE-2022-43562LOWHost Header Injection in Splunk EnterpriseEPSS 0.4%CVE-2025-20183MEDIUMCisco Secure Web Appliance Range Request Bypass VulnerabilityEPSS 0.4%CVE-2025-7099MEDIUMBoyunCMS Installation install2.php deserializationEPSS 0.4%CVE-2025-65561HIGHAn issue was discovered in function LocalNode.Sess in free5GC 4.1.0 allowing attackers to cause a denial of service or other unspecified impEPSS 0.4%CVE-2026-33882MEDIUMStatamic's Markdown preview endpoint exposes sensitive user dataEPSS 0.4%CVE-2023-30952MEDIUMFoundry Issues reporterPath phishing by parameter injectionEPSS 0.4%CVE-2026-54217MEDIUMTeamDavid: Stored XSS in web applicationEPSS 0.4%CVE-2021-4120HIGHsnapd could be made to bypass intended access restrictions through snap content interfaces and layout pathsEPSS 0.4%CVE-2021-39254MEDIUMA crafted NTFS image can cause an integer overflow in memmove, leading to a heap-based buffer overflow in the function ntfs_attr_record_resiEPSS 0.4%CVE-2025-41379MEDIUMInjection vulnerability in Iridium Certus 700EPSS 0.4%CVE-2024-34473MEDIUMAn issue was discovered in appmgr in O-RAN Near-RT RIC I-Release. An attacker could register an unintended RMR message type during xApp regiEPSS 0.4%CVE-2021-41133HIGHSandbox bypass via recent VFS-manipulating syscallsEPSS 0.4%CVE-2024-51392HIGHAn issue in OpenKnowledgeMaps Headstart v7 allows a remote attacker to escalate privileges via the url parameter of the getPDF.php componentEPSS 0.4%CVE-2023-25661MEDIUMDenial of Service in TensorFlowEPSS 0.4%CVE-2026-70319MEDIUMMicrosoft Office Word Information Disclosure VulnerabilityEPSS 0.4%CVE-2026-70320MEDIUMPowerpoint Information Disclosure VulnerabilityEPSS 0.4%CVE-2026-70323MEDIUMMicrosoft Office Information Disclosure VulnerabilityEPSS 0.4%CVE-2026-70322MEDIUMPowerpoint Information Disclosure VulnerabilityEPSS 0.4%