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-2022-30789MEDIUMA crafted NTFS image can cause a heap-based buffer overflow in ntfs_check_log_client_array in NTFS-3G through 2021.8.22.EPSS 0.4%CVE-2022-30786MEDIUMA crafted NTFS image can cause a heap-based buffer overflow in ntfs_names_full_collate in NTFS-3G through 2021.8.22.EPSS 0.4%CVE-2023-39381— Input verification vulnerability in the storage module. Successful exploitation of this vulnerability may cause the device to restart.EPSS 0.4%CVE-2024-43373HIGHwebcrack has an Arbitrary File Write Vulnerability on Windows when Parsing and Saving a Malicious BundleEPSS 0.4%CVE-2025-59028MEDIUMWhen sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to faiEPSS 0.4%CVE-2023-39390—Vulnerability of input parameter verification in certain APIs in the window management module. Successful exploitation of this vulnerabilityEPSS 0.4%CVE-2026-13341HIGHPrompt Injection and Credential Exposure via Untrusted Analytics Data in Kong Konnect MCPEPSS 0.4%CVE-2023-20132MEDIUMCisco Webex Meetings Web UI VulnerabilitiesEPSS 0.4%CVE-2026-23836CRITICALHotCRP vulnerable to remote code execution through formulasEPSS 0.4%CVE-2026-33894HIGHForge has signature forgery in RSA-PKCS due to ASN.1 extra fieldEPSS 0.4%CVE-2025-11958MEDIUMAn improper input validation in the Security Dashboard ignored-tasks API of Devolutions Server 2025.2.15.0 and earlier allows an authenticatEPSS 0.4%CVE-2026-53600MEDIUMasync-tar PAX extension-header desync enables tar entry/content smugglingEPSS 0.4%CVE-2026-54199MEDIUMTeamDavid: Header Injection through request body in link storing functionalityEPSS 0.4%CVE-2025-0424MEDIUMMultiple Authenticated Stored Cross-Site ScriptingEPSS 0.4%CVE-2026-12246HIGHOut of bounds stack write with crafted APL RREPSS 0.4%CVE-2022-22384MEDIUMIBM Security Verify Privilege improper input validationEPSS 0.4%CVE-2023-26273MEDIUMIBM QRadar security bypassEPSS 0.4%CVE-2019-1839MEDIUMCisco Remote PHY Device Software Command Injection VulnerabilityEPSS 0.4%CVE-2025-57528HIGHAn issue was discovered in Tenda AC6 US_AC6V1.0BR_V15.03.05.16_multi_TD01 allowing attackers to cause a denial of service via the funcname, EPSS 0.4%CVE-2026-16117CRITICAL@fastify/http-proxy vulnerable to prefix escape via URL-encoded charactersEPSS 0.4%