vulnerability
Red Hat: CVE-2025-30218: next.js: Next.js may leak x-middleware-subrequest-id to external hosts
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:P/I:N/A:N) | Apr 2, 2025 | Jul 9, 2025 | Jul 10, 2025 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
Apr 2, 2025
Added
Jul 9, 2025
Modified
Jul 10, 2025
Description
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.
Solution
no-fix-redhat-rpm-package
References
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