Weaknesses of type CWE-20

5,427 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-2024-29008MEDIUMApache CloudStack: The extraconfig feature can be abused to load hypervisor resources on a VM instanceEPSS 0.6%CVE-2025-27517CRITICALVolt Allows RCE Via User-Crafted RequestsEPSS 0.6%CVE-2024-55653MEDIUMpwndoc's UnhandledPromiseRejection on audits causes Denial of Service (DoS)EPSS 0.6%CVE-2026-21258MEDIUMMicrosoft Excel Information Disclosure VulnerabilityEPSS 0.6%CVE-2023-28291HIGHRaw Image Extension Remote Code Execution VulnerabilityEPSS 0.6%CVE-2023-26095—ASQ in Stormshield Network Security (SNS) 4.3.15 before 4.3.16 and 4.6.x before 4.6.3 allows a crash when analysing a crafted SIP packet.EPSS 0.6%CVE-2025-2689MEDIUMyiisoft Yii2 SortableIterator.php getIterator deserializationEPSS 0.6%CVE-2022-27897MEDIUMPalantir Gotham included an endpoint that would log arbitrary sized zip files. EPSS 0.6%CVE-2023-20530HIGHInsufficient input validation of BIOS mailbox messages in SMU may result in out-of-bounds memory reads potentially resulting in a denial of EPSS 0.6%CVE-2026-54234HIGHvLLM: Remote DoS in vLLM via Invalid Recovered Token ReinjectionEPSS 0.6%CVE-2023-20522HIGHInsufficient input validation in ASP may allow an attacker with a malicious BIOS to potentially cause a denial of service. EPSS 0.6%CVE-2022-27892MEDIUMPalantir Gotham included an endpoint that would log arbitrary sized payloads. EPSS 0.6%CVE-2025-31240HIGHThis issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.5, macOS Sonoma 14.7.6, macOS Ventura 13.7.6. MountinEPSS 0.6%CVE-2021-1249MEDIUMCisco Data Center Network Manager VulnerabilitiesEPSS 0.6%CVE-2021-1250MEDIUMCisco Data Center Network Manager VulnerabilitiesEPSS 0.6%CVE-2026-44482CRITICALsoundcloud-rpc: Remote Code Execution via XSS in Track TitleEPSS 0.6%CVE-2021-1253MEDIUMCisco Data Center Network Manager VulnerabilitiesEPSS 0.6%CVE-2024-0031CRITICALIn attp_build_read_by_type_value_cmd of att_protocol.cc , there is a possible out of bounds write due to improper input validation. This couEPSS 0.6%CVE-2024-9257MEDIUMLogsign Unified SecOps Platform delete_gsuite_key_file Input Validation Arbitrary File Deletion VulnerabilityEPSS 0.6%CVE-2023-22491HIGHgatsby-transformer-remark vulnerable to unsanitized JavaScript code injection EPSS 0.6%