CVE-2026-94485
mediumNext.js is a React framework for building full-stack web applications.
Vendor / product: Vercel — next.js
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.
CVSS
5.3
5.3 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-10-02 16:16
Modified: 2026-10-05 14:57
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 06:57 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
vercel / next.js ≥16.0.0 <16.3.8
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/vercel/next.js/commit/2d9f50a409312696145b82b3157aadb6b1fef476 security-advisories@github.com
- https://github.com/vercel/next.js/releases/tag/v16.3.8 security-advisories@github.com
- https://github.com/vercel/next.js/security/advisories/GHSA-f87g-xv8r-7p7x security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:57 UTC · record ↗