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-2021-26639HIGHWISA Smart Wing CMS File Download VulnerabilityEPSS 0.5%CVE-2026-59109HIGHZalktis: SQL injection via partner-controlled fields in imported e-invoicesEPSS 0.5%CVE-2024-1246LOWConcrete CMS in version 9 before 9.2.5 is vulnerable to reflected XSS via the Image URL Import FeatureEPSS 0.5%CVE-2021-25682HIGHapport improperly parses /proc/pid/statusEPSS 0.5%CVE-2023-41300—Vulnerability of parameters not being strictly verified in the PMS module. Successful exploitation of this vulnerability may cause the systeEPSS 0.5%CVE-2026-94093MEDIUMDLR-RM stable-baselines3 save_util.py VecNormalize.load deserializationEPSS 0.5%CVE-2021-39261MEDIUMA crafted NTFS image can cause a heap-based buffer overflow in ntfs_compressed_pwrite in NTFS-3G < 2021.8.22.EPSS 0.5%CVE-2019-15971MEDIUMCisco Email Security Appliance MP3 Content Filter Bypass VulnerabilityEPSS 0.5%CVE-2021-39263MEDIUMA crafted NTFS image can trigger a heap-based buffer overflow, caused by an unsanitized attribute in ntfs_get_attribute_value, in NTFS-3G < EPSS 0.5%CVE-2023-34983MEDIUMImproper input validation for some Intel(R) PROSet/Wireless and Intel(R) Killer(TM) Wi-Fi software before version 22.240 may allow an unauthEPSS 0.5%CVE-2025-3116HIGHCWE-20: Improper Input Validation vulnerability exists that could cause Denial of Service when an authenticated malicious user sends specialEPSS 0.5%CVE-2024-39281MEDIUMUnbounded allocation in ctl(4) CAM Target LayerEPSS 0.5%CVE-2021-0214MEDIUMJunos OS: Denial of Service in ppmd upon receipt of malformed packetEPSS 0.5%CVE-2026-5659MEDIUMpytries datrie trie File datrie.pyx Trie.__setstate__ deserializationEPSS 0.5%CVE-2023-20134MEDIUMCisco Webex Meetings Web UI VulnerabilitiesEPSS 0.5%CVE-2026-55554LOWDompdf: Chroot Validation BypassEPSS 0.5%CVE-2026-33692HIGHAVideo Has Unauthenticated .env File Exposure via Official Docker Compose ConfigurationEPSS 0.5%CVE-2025-15375MEDIUMEyouCMS arcpagelist Ajax.php unserialize deserializationEPSS 0.5%CVE-2025-23268HIGHNVIDIA Triton Inference Server contains a vulnerability in the DALI backend where an attacker may cause an improper input validation issue. EPSS 0.5%CVE-2024-47866HIGHRGW DoS attack with empty HTTP header in S3 object copyEPSS 0.4%