Falhas do tipo CWE-1321

436 resultados

Poluição de Protótipo

Fraqueza que permite a um atacante modificar o protótipo de objetos JavaScript, afetando todas as instâncias presentes e futuras da aplicação. Ocorre quando código não valida ou filtra adequadamente dados que serão mesclados em objetos, permitindo injeção de propriedades maliciosas como '__proto__' ou 'constructor.prototype'.

Exemplo

Uma API REST que aceita JSON e faz merge direto em um objeto de configuração global (ex: `Object.assign(config, userInput)`) permite que um atacante envie {"__proto__.isAdmin": true} para ganhar privilégios em todos os usuários conectados.

Como mitigar

Valide e sanitize entradas antes de atribuições em objetos; use Object.create(null) para criar objetos sem protótipo; implemente blocklists explícitas para propriedades permitidas; considere bibliotecas especializadas em deep merge seguro (como lodash com opções de segurança).

CVE-2026-78654MEDIUMcleverbrush framework/deep deepExtend.ts deepExtend prototype pollutionEPSS 0.7%CVE-2025-25977CRITICALAn issue in canvg v.4.0.2 allows an attacker to execute arbitrary code via the Constructor of the class StyleElement.EPSS 0.7%CVE-2023-28103HIGHPrototype pollution in matrix-react-sdkEPSS 0.7%CVE-2024-21489HIGHVersions of the package uplot before 1.6.31 are vulnerable to Prototype Pollution via the uplot.assign function due to missing check if the EPSS 0.7%CVE-2026-105844CRITICALPayload: Prototype pollution in Payload Import Export pluginEPSS 0.7%CVE-2024-33519HIGHAuthenticated Server-Side prototype pollution Leading to Information DisclosureEPSS 0.7%CVE-2024-39014CRITICALahilfoley cahil/utils v2.3.2 was discovered to contain a prototype pollution via the function set. This vulnerability allows attackers to exEPSS 0.7%CVE-2024-36573CRITICALalmela obx before v.0.0.4 has a Prototype Pollution issue which allows arbitrary code execution via the obx/build/index.js:656), reduce (@alEPSS 0.7%CVE-2025-48054MEDIUMRadashi Vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')EPSS 0.7%CVE-2024-12629MEDIUMPrototype Pollution in Progress® Telerik® KendoReactEPSS 0.7%CVE-2024-11628MEDIUMPrototype Pollution in Progress® Telerik® Kendo UI for VueEPSS 0.7%CVE-2024-24293HIGHA Prototype Pollution issue in MiguelCastillo @bit/loader v.10.0.3 allows an attacker to execute arbitrary code via the M function e argumenEPSS 0.7%CVE-2026-63376HIGHtoml-node: Prototype Pollution Leads to `Object.prototype` Corruption via `__proto__` Key-Path DesynchronizationEPSS 0.7%CVE-2026-81887MEDIUMLivewire DOM-based cross-site scripting during client-side state handlingEPSS 0.7%CVE-2026-82404HIGHTOON: Prototype pollution when decoding untrusted TOON inputEPSS 0.7%CVE-2024-21548HIGHVersions of the package bun after 0.0.12 and before 1.1.30 are vulnerable to Prototype Pollution due to improper input sanitization. An attaEPSS 0.7%CVE-2025-3982MEDIUMnortikin Sverchok Set Property Mk2 Node getsetprop_mk2.py SvSetPropNodeMK2 prototype pollutionEPSS 0.7%CVE-2026-59206HIGHn8n: Prototype Pollution via Workflow Credentials Leads to Unauthenticated User and Project EnumerationEPSS 0.7%CVE-2026-73088HIGHBrowserslist: Uncaught crash / prototype write via untrusted browserslist-stats.json custom stats (normalizeStats)EPSS 0.7%CVE-2026-42041MEDIUMAxios: Authentication Bypass via Prototype Pollution Gadget in `validateStatus` Merge StrategyEPSS 0.7%