Weaknesses of type CWE-20

5,847 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-2021-1305HIGHCisco SD-WAN vManage Authorization Bypass VulnerabilitiesEPSS 1.3%CVE-2018-1051—It was found that the fix for CVE-2016-9606 in versions 3.0.22 and 3.1.2 was incomplete and Yaml unmarshalling in Resteasy is still possibleEPSS 1.3%CVE-2022-20679MEDIUMCisco IOS XE Software IPSec Denial of Service VulnerabilityEPSS 1.3%CVE-2019-12706MEDIUMCisco Email Security Appliance Filter Bypass VulnerabilityEPSS 1.3%CVE-2023-24816MEDIUMset_term_title command injection in ipythonEPSS 1.3%CVE-2022-24905MEDIUMArgo CD login screen allows message spoofing if SSO is enabledEPSS 1.3%CVE-2022-3752HIGHRockwell Automation GuardLogix and ControlLogix controllers Vulnerable to Denial-Of-Service AttackEPSS 1.3%CVE-2022-47192HIGHAdmin password reset via file upload vulnerability in Generex CS141EPSS 1.3%CVE-2023-48693HIGHAzure RTOS ThreadX Remote Code Execution VulnerabilityEPSS 1.3%CVE-2020-25626—A flaw was found in Django REST Framework versions before 3.12.0 and before 3.11.2. When using the browseable API viewer, Django REST FramewEPSS 1.3%CVE-2022-45060HIGHAn HTTP Request Forgery issue was discovered in Varnish Cache 5.x and 6.x before 6.0.11, 7.x before 7.1.2, and 7.2.x before 7.2.1. An attackEPSS 1.3%CVE-2022-39266CRITICALisolated-vm has vulnerable CachedDataOptions in APIEPSS 1.3%CVE-2022-24846CRITICALUnchecked JNDI lookups in GeoWebCacheEPSS 1.3%CVE-2026-48277CRITICALColdFusion | Improper Input Validation (CWE-20)EPSS 1.3%CVE-2017-2674MEDIUMJBoss BRMS 6 and BPM Suite 6 before 6.4.3 are vulnerable to a stored XSS via several lists in Business Central. The flaw is due to lack of sEPSS 1.3%CVE-2026-77535CRITICALA malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi NetEPSS 1.3%CVE-2026-77542CRITICALA malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UID EnterEPSS 1.3%CVE-2026-77540CRITICALA malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS EPSS 1.3%CVE-2026-77539CRITICALA malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS EPSS 1.3%CVE-2020-14338—A flaw was found in Wildfly's implementation of Xerces, specifically in the way the XMLSchemaValidator class in the JAXP component of WildflEPSS 1.3%