Weaknesses of type CWE-20

5,888 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-2023-3894MEDIUMDOS in jackson-dataformats-textEPSS 0.9%CVE-2023-20105CRITICALA vulnerability in the change password functionality of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) coulEPSS 0.9%CVE-2025-55444CRITICALA SQL injection vulnerability exists in the id2 parameter of the cancel_booking.php page in Online Artwork and Fine Arts MCA Project 1.0. A EPSS 0.9%CVE-2026-43725HIGHThe issue was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 andEPSS 0.9%CVE-2026-85797MEDIUMWindows GDI Information Disclosure VulnerabilityEPSS 0.9%CVE-2020-3474MEDIUMCisco IOS XE Software Web Management Framework VulnerabilitiesEPSS 0.9%CVE-2021-20302—A flaw was found in OpenEXR's TiledInputFile functionality. This flaw allows an attacker who can submit a crafted single-part non-image to bEPSS 0.9%CVE-2021-39220LOWBypass of image blocking in Nextcloud MailEPSS 0.9%CVE-2017-6650—A vulnerability in the Telnet CLI command of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus Series Switches could allow EPSS 0.9%CVE-2024-38311MEDIUMApache Traffic Server: Request smuggling via pipelining after a chunked message bodyEPSS 0.9%CVE-2026-46452MEDIUMApache NimBLE: Mesh Proxy SAR reassembly unbounded append and unchecked failureEPSS 0.9%CVE-2021-3911MEDIUMMisconfigured IP address field in ROA leads to OctoRPKI crashEPSS 0.9%CVE-2022-47378MEDIUMCODESYS: Multiple products prone to Improper Input ValidationEPSS 0.9%CVE-2019-12699HIGHCisco FXOS Software and Firepower Threat Defense Software Command Injection VulnerabilitiesEPSS 0.9%CVE-2023-26125MEDIUMVersions of the package github.com/gin-gonic/gin before 1.9.0 are vulnerable to Improper Input Validation by allowing an attacker to use a sEPSS 0.9%CVE-2023-28098MEDIUMOpenSIPS has vulnerability in the Digest Authentication ParserEPSS 0.9%CVE-2023-46285HIGHA vulnerability has been identified in Opcenter Execution Foundation (All versions < V2407), Opcenter Quality (All versions < V2312), SIMATIEPSS 0.9%CVE-2023-28099MEDIUMOpenSIPS has vulnerability in the ds_is_in_list() functionEPSS 0.9%CVE-2021-3802—A vulnerability found in udisks2. This flaw allows an attacker to input a specially crafted image file/USB leading to kernel panic. The highEPSS 0.9%CVE-2022-28695HIGHOn F5 BIG-IP AFM 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, and 13.1.x versionEPSS 0.9%