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CVE-2026-94486 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/vercel/next.js/commit/2d9f50a409312696145b82b3157aadb6b1fef476	[email protected]
https://github.com/vercel/next.js/releases/tag/v16.3.8	[email protected]
https://github.com/vercel/next.js/security/advisories/GHSA-39w2-rjm5-chcv	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-346	Origin Validation Error	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 2, 2026	CVE Modified	CISA-ADP
Oct 2, 2026	New CVE Received	[email protected]