Weaknesses of type CWE-20

5,887 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-2026-102867MEDIUMMicrosoft Office Word Information Disclosure VulnerabilityEPSS 1.0%CVE-2017-15137MEDIUMThe OpenShift image import whitelist failed to enforce restrictions correctly when running commands such as "oc tag", for example. This coulEPSS 1.0%CVE-2023-27601HIGHOpenSIPS has vulnerability in the codec_delete_XX() functionsEPSS 1.0%CVE-2023-27600HIGHOpenSIPS has vulnerability in the codec_delete_XX() functionsEPSS 1.0%CVE-2022-26107—When a user opens a manipulated Jupiter Tesselation (.jt, JTReader.x3d) received from untrusted sources in SAP 3D Visual Enterprise Viewer -EPSS 1.0%CVE-2022-26106—When a user opens a manipulated Computer Graphics Metafile (.cgm, CgmCore.dll) received from untrusted sources in SAP 3D Visual Enterprise VEPSS 1.0%CVE-2026-33844CRITICALAzure Managed Instance for Apache Cassandra Remote Code Execution VulnerabilityEPSS 1.0%CVE-2019-5461—An input validation problem was discovered in the GitHub service integration which could result in an attacker being able to make arbitrary EPSS 1.0%CVE-2022-43723HIGHA vulnerability has been identified in SICAM PAS/PQS (All versions < V7.0), SICAM PAS/PQS (All versions >= 7.0 < V8.06). Affected software dEPSS 1.0%CVE-2022-26109—When a user opens a manipulated Portable Document Format (.pdf, PDFView.x3d) received from untrusted sources in SAP 3D Visual Enterprise VieEPSS 1.0%CVE-2022-29606CRITICALAn issue was discovered in ONOS 2.5.1. An intent with a large port number shows the CORRUPT state, which is misleading to a network operatorEPSS 1.0%CVE-2026-45495HIGHMicrosoft Edge (Chromium-based) Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-33029MEDIUMNginx UI: DoS via Negative Integer Input in Logrotate IntervalEPSS 1.0%CVE-2018-0196—A vulnerability in the web-based user interface (web UI) of Cisco IOS XE Software could allow an authenticated, remote attacker to write arbEPSS 1.0%CVE-2023-1888HIGHDirectorist <= 7.5.4 - Authenticated (Subscriber+) Arbitrary User Password Reset to Privilege EscalationEPSS 1.0%CVE-2023-29195MEDIUMVitess VTAdmin users that can create shards can deny access to other functionsEPSS 1.0%CVE-2023-32323MEDIUMSynapse Outgoing federation to specific hosts can be disabled by sending malicious invitesEPSS 1.0%CVE-2023-20072HIGHCisco IOS XE Software Fragmented Tunnel Protocol Packet Denial of Service VulnerabilityEPSS 1.0%CVE-2023-28955MEDIUMIBM Watson Knowledge Catalog denial of serviceEPSS 1.0%CVE-2026-41044HIGHApache ActiveMQ, Apache ActiveMQ Broker, Apache ActiveMQ All: Authenticated user can perform RCE via DestinationView MBean exposed by JolokiaEPSS 1.0%