Weaknesses of type CWE-20

5,450 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-2026-56325LOWCapgo - App ID Confusion via ILIKE Wildcard in Preview Subdomain LookupEPSS 0.3%CVE-2026-94091MEDIUMpiskvorky gensim Model Loader utils.py load deserializationEPSS 0.3%CVE-2026-59650CRITICALMTI/A0 DH agreement exponentiates unvalidated peer valueEPSS 0.3%CVE-2024-20327HIGHA vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation ServicesEPSS 0.3%CVE-2026-65891MEDIUMJoomla Extension - joomlacontenteditor.net - Creation of hidden files and unintended file overwrite via rename function in Joomla Content Editor (JCE) < 2.9.99.10EPSS 0.3%CVE-2025-66451MEDIUMLibreChat's Improper Input Validation in Prompt Creation API Enables Unauthorized Permission ChangesEPSS 0.3%CVE-2022-36448HIGHAn issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. There is an SMM memory corruption vulnerability in the Software SMIEPSS 0.3%CVE-2025-52547HIGHDoS to the application servicesEPSS 0.3%CVE-2023-1789MEDIUMImproper Input Validation in firefly-iii/firefly-iiiEPSS 0.3%CVE-2022-29201MEDIUMMissing validation in `QuantizedConv2D` results in undefined behavior in TensorFlowEPSS 0.3%CVE-2023-46763—Vulnerability of background app permission management in the framework module. Successful exploitation of this vulnerability may cause backgEPSS 0.3%CVE-2025-61768MEDIUMKuno CMS Vulnerable to Server-Side Request Forgery (SSRF) via Unsafe SVG UploadEPSS 0.3%CVE-2026-34980MEDIUMOpenPrinting CUPS: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the networkEPSS 0.3%CVE-2022-44553MEDIUMThe HiView module has a vulnerability of not filtering third-party apps out when the HiView module traverses to invoke the system provider. EPSS 0.3%CVE-2026-1577MEDIUMIBM® Db2® is vulnerable to a denial of service with a specially crafted query involving multiple subqueriesEPSS 0.3%CVE-2026-100902HIGHBarco ClickShare CX-20 Gen2 Wallpaper Upload wallpaper improper validation of syntactic correctness of inputEPSS 0.3%CVE-2026-8714HIGHDenial-of-Service Vulnerability in RTSP Input Handling on TP-Link's Tapo C520WSEPSS 0.3%CVE-2024-13798MEDIUMPost Grid and Gutenberg Blocks – ComboBlocks <= 2.3.5 - Unauthenticated Paid Order CreationEPSS 0.3%CVE-2026-49234HIGHRoutinator crashes on specifically crafted ASN strings in the APIEPSS 0.3%CVE-2026-69352HIGHWindows Biometric Service Elevation of Privilege VulnerabilityEPSS 0.3%