Weaknesses of type CWE-20

5,418 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-2026-71300CRITICALApache Camel: Camel-Atmosphere-Websocket: WebSocket dispatch header injectionEPSS 0.7%CVE-2026-65637CRITICALApache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incompleteEPSS 0.7%CVE-2023-27597HIGHOpenSIPS has vulnerability in the parse_uri() functionEPSS 0.7%CVE-2023-47141MEDIUMIBM Db2 denial of serviceEPSS 0.7%CVE-2023-47158MEDIUMIBM Db2 denial of serviceEPSS 0.7%CVE-2026-53551MEDIUMfree5GC AUSF: null byte injection in supiOrSuci causes HTTP 500 internal service failureEPSS 0.7%CVE-2025-29923LOWgo-redis allows potential out of order responses when `CLIENT SETINFO` times out during connection establishmentEPSS 0.7%CVE-2023-36674—An issue was discovered in MediaWiki before 1.35.11, 1.36.x through 1.38.x before 1.38.7, 1.39.x before 1.39.4, and 1.40.x before 1.40.1. ItEPSS 0.7%CVE-2023-5832CRITICALImproper Input Validation in mintplex-labs/anything-llmEPSS 0.7%CVE-2025-53939MEDIUMKiteworks Core is vulnerable to Improper Input ValidationEPSS 0.7%CVE-2024-12138MEDIUMhorilla create_skills deserializationEPSS 0.7%CVE-2017-7509LOWAn input validation error was found in Red Hat Certificate System's handling of client provided certificates before 8.1.20-1. If the certreqEPSS 0.7%CVE-2024-22119MEDIUMStored XSS in graph items select formEPSS 0.7%CVE-2025-59250HIGHJDBC Driver for SQL Server Spoofing VulnerabilityEPSS 0.7%CVE-2024-47179HIGHRSSHub's `docker-test-cont.yml` workflow is vulnerable to Artifact Poisoning which may lead to a full repository takeover.EPSS 0.7%CVE-2026-91932CRITICALFlowise before 3.1.4 Remote Code Execution via cwd ParameterEPSS 0.7%CVE-2024-49361HIGHPotential Vulnerability in ACON Library: Improper Input Validation Leading to Malicious Code ExecutionEPSS 0.7%CVE-2026-48204CRITICALApache Camel: Camel-MongoDB-GridFS: The gridfs.* control headers used non-Camel-prefixed names that bypass the HTTP header filter, allowing an HTTP client to switch the GridFS operation - including destructive file deletion - in the default configurationEPSS 0.7%CVE-2026-40920CRITICALApache Ranger: Privilege Escalation via URL ParameterEPSS 0.7%CVE-2026-48755CRITICALIncus has an argument injection in backup compression algorithm leading to AFW and ACEEPSS 0.7%