Описание
Next.js is a React framework for building full-stack web applications. From 16.0.0 until 16.3.8, the next dev development server exposes a Model Context Protocol endpoint without reliably restricting cross-site requests. A malicious website visited by a developer can reach the endpoint and read the project's disk location, source code snippets from error reports, route inventory, and development logs. Production deployments do not serve this endpoint. This issue is fixed in version 16.3.8.
A flaw was found in Next.js. During local development, the development server exposes a Model Context Protocol (MCP) endpoint without properly restricting cross-site requests. If a developer visits a malicious website while running the development server, an attacker can issue unauthorized requests to access sensitive project information, including file paths, source code snippets, application routes, and development logs.
Отчет
This vulnerability is rated as Moderate severity because it is confined strictly to local development environments and requires user interaction, rather than directly exposing production infrastructure. Production builds do not instantiate or serve the Model Context Protocol endpoint, leaving deployed runtime workloads unaffected. Exposure is limited to scenarios where an engineer running an active local development server visits an untrusted website, which can then perform cross-origin queries to read workspace paths, logs, and route data.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | firefox | Fix deferred | ||
| Red Hat Enterprise Linux 10 | thunderbird | Fix deferred | ||
| Red Hat Enterprise Linux 7 | firefox | Fix deferred | ||
| Red Hat Enterprise Linux 8 | firefox | Fix deferred | ||
| Red Hat Enterprise Linux 8 | thunderbird | Fix deferred | ||
| Red Hat Enterprise Linux 9 | firefox | Fix deferred | ||
| Red Hat Enterprise Linux 9 | thunderbird | Fix deferred | ||
| Red Hat Enterprise Linux AI (RHEL AI) 3 | rhelai3/bootc-cuda-rhel9 | Fix deferred | ||
| Red Hat Enterprise Linux AI (RHEL AI) 3 | rhelai3/bootc-gaudi-rhel9 | Fix deferred | ||
| Red Hat Enterprise Linux AI (RHEL AI) 3 | rhelai3/bootc-rocm-rhel9 | Fix deferred |
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Ссылки на источники
Дополнительная информация
Статус:
EPSS
4.3 Medium
CVSS3
Связанные уязвимости
Next.js is a React framework for building full-stack web applications. From 16.0.0 until 16.3.8, the `next dev` development server exposes a Model Context Protocol endpoint without reliably restricting cross-site requests. A malicious website visited by a developer can reach the endpoint and read the project's disk location, source code snippets from error reports, route inventory, and development logs. Production deployments do not serve this endpoint. This issue is fixed in version 16.3.8.
Next.js has information disclosure in App Router metadata image routes via dynamicParams bypass
EPSS
4.3 Medium
CVSS3