Fallos del tipo CWE-1321

439 resultados

Poluição de Protótipo

Ocorre quando um atacante modifica o protótipo de um objeto JavaScript (ou estrutura similar em outras linguagens), afetando todos os objetos criados a partir dele. Isso acontece quando código inseguro copia propriedades de entrada do usuário diretamente para objetos sem validação, permitindo que chaves como '__proto__' ou 'constructor.prototype' sejam manipuladas.

Ejemplo

Um servidor Node.js faz merge de um JSON enviado pelo cliente em um objeto global de configuração usando Object.assign(). Um atacante envia {"__proto__": {"isAdmin": true}} e, com isso, todos os novos objetos herdam isAdmin=true, contornando autenticação.

Cómo mitigar

Valide e sanitize chaves de entrada, bloqueando '__proto__', 'constructor' e 'prototype'. Use Object.create(null) para objetos sem herança ou operações seguras como Object.defineProperty(). Em frameworks modernos, prefira bibliotecas que já tratam isso (ex: deep-clone com whitelist de propriedades).

CVE-2026-107701HIGHdot-access through 1.0.0 Prototype Pollution via set() path argumentEPSS 0.3%CVE-2026-40190MEDIUMLangSmith Client SDKs has Prototype Pollution in langsmith-sdk via Incomplete `__proto__` Guard in Internal lodash `set()`EPSS 0.3%CVE-2026-16008MEDIUMsagold json-schema-library propertyDependencies.ts parsePropertyDependencies prototype pollutionEPSS 0.3%CVE-2026-65913MEDIUMDOMPurify before 3.3.2 Prototype Pollution via USE_PROFILESEPSS 0.3%CVE-2026-67319MEDIUMaxios before 0.33.0 Prototype Pollution via nested option objectsEPSS 0.3%CVE-2026-46509HIGHdeepobj: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')EPSS 0.3%CVE-2026-45302HIGHPrototype Pollution in parse-nested-form-data via `__proto__` in FormData field namesEPSS 0.3%CVE-2026-12209MEDIUMRubyLouvre avalon Template Filter index.js prototype pollutionEPSS 0.3%CVE-2026-25521CRITICALLocutus is vulnerable to Prototype PollutionEPSS 0.3%CVE-2026-12208MEDIUMjsonata-js jsonata Function Binding Frame System jsonata.js createFrame prototype pollutionEPSS 0.3%CVE-2025-57350HIGHThe csvtojson package, a tool for converting CSV data to JSON with customizable parsing capabilities, contains a prototype pollution vulneraEPSS 0.3%CVE-2026-110848MEDIUMn8n before 1.123.83, 2.41.4, and 2.42.1 Prototype Pollution via AI Workflow Builder Connection MergeEPSS 0.3%CVE-2026-110842HIGHn8n before 2.41.4 and 2.42.1 Prototype Pollution via MCP Workflow-Validation InterpreterEPSS 0.3%CVE-2026-41690HIGHPrototype pollution and path traversal in i18next-http-middleware via user-controlled language and namespace parametersEPSS 0.3%CVE-2026-97724MEDIUMA prototype pollution vulnerability in Software Mansion React Native Worklets before 0.12.2 allows an attacker-controlled object containing EPSS 0.3%CVE-2024-14020LOWcarboneio carbone Formatter input.js prototype pollutionEPSS 0.3%CVE-2026-23736HIGHseroval Affected by Prototype Pollution via JSON DeserializationEPSS 0.3%CVE-2026-86536MEDIUMApache Thrift, Apache Thrift, Apache Thrift: A map key from the wire can replace a decoded object's prototype in generated JavaScriptEPSS 0.3%CVE-2026-94646HIGHApache Thrift: Node.js `server.js` ends the process on any per-connection error (+ two triggers)EPSS 0.3%CVE-2026-118678HIGHn8n before 2.41.4 and 2.42.1 Prototype Pollution DoS via Workflow History CompactionEPSS 0.3%