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CVE-2025-30218
Good to know:
Date: April 2, 2025
Next.js is a React framework for building full-stack web applications. To mitigate CVE-2025-29927, Next.js validated the x-middleware-subrequest-id which persisted across multiple incoming requests. However, this subrequest ID is sent to all requests, even if the destination is not the same host as the Next.js application. Initiating a fetch request to a third-party within Middleware will send the x-middleware-subrequest-id to that third party. This vulnerability is fixed in 12.3.6, 13.5.10, 14.2.26, and 15.2.4.
Severity Score
Related Resources (5)
Severity Score
Weakness Type (CWE)
Exposure of Sensitive Information to an Unauthorized Actor
CWE-200Top Fix
Upgrade Version
Upgrade to version next - 12.3.6;next - 13.5.10;next - 14.2.26;next - 15.2.4;https://github.com/vercel/next.js.git - v12.3.6;https://github.com/vercel/next.js.git - v13.5.10;https://github.com/vercel/next.js.git - v14.2.26;https://github.com/vercel/next.js.git - v15.2.4
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | HIGH |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | NONE |
| Availability (A): | NONE |