Fallos del tipo CWE-1321

379 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-2026-27524LOWOpenClaw < 2026.2.21 - Prototype Pollution via Debug Override PathEPSS 0.2%CVE-2026-53609CRITICALApostrophe has Server-Side Prototype Pollution in apos.util.set via patch operators that leads to process-wide authorization bypassEPSS 0.2%CVE-2026-44489LOWAxios: Proxy-Authorization Header Injection via Prototype Pollution — Incomplete Null-Prototype FixEPSS 0.2%CVE-2026-31865MEDIUMElysia Cookie Value Prototype PollutionEPSS 0.2%CVE-2026-77083MEDIUMn8n before 1.123.69 Code Node Sandbox Escape via Function.prototype PollutionEPSS 0.2%CVE-2026-41238MEDIUMDOMPurify: Prototype Pollution to XSS Bypass via CUSTOM_ELEMENT_HANDLING FallbackEPSS 0.2%CVE-2026-4239MEDIUMLagom WHMCS Template Datatables prototype pollutionEPSS 0.2%CVE-2026-82257MEDIUMSvelteKit before 2.69.1 Prototype Pollution via File InputEPSS 0.2%CVE-2025-34146HIGHnyariv sandboxjs 0.8.23 Prototype Pollution Sandbox Escape DoSEPSS 0.2%CVE-2026-14893HIGHIBM Instana Observability is affected by multiple Prototype Pollution within Instana Agent container imageEPSS 0.2%CVE-2024-36578MEDIUMakbr update 1.0.0 is vulnerable to Prototype Pollution via update/index.js.EPSS 0.2%CVE-2026-71438LOWMermaid configuration APIs allow prototype pollutionEPSS 0.2%CVE-2026-53592MEDIUMFreeScout vulnerable to prototype pollution in getQueryParamEPSS 0.2%CVE-2026-23929HIGHPrototype pollution leading to stored XSSEPSS 0.2%CVE-2024-2495MEDIUMCryptographic key in plain text vulnerability in FriendlyElec's FriendlyWrtEPSS 0.2%CVE-2026-42077MEDIUMEvolver: Prototype Pollution via `Object.assign()` in mailbox store operationsEPSS 0.1%CVE-2025-58280HIGHVulnerability of exposing object heap addresses in the Ark eTS module. Impact: Successful exploitation of this vulnerability may affect avaiEPSS 0.1%CVE-2026-30785HIGHRustDesk Encrypts Local Passwords with World-Readable Machine ID and Fixed Zero Nonce (XSalsa20-Poly1305)EPSS 0.1%CVE-2026-61834MEDIUMscim-patch: Mutation of Inherited Built-in Method ObjectsEPSS —