VDB
CVE-2026-94486
CVE-2026-94486
PUBLISHED
CVSS 2.3 LOW
Reported by GitHub_M · Published October 2, 2026
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.
Risk Scores
CVSS 4.0
2.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| vercel | next.js | >= 16.0.0, < 16.3.8 |
| vercel | next.js | 16.0.0 |
| chainguard | zitadel-4 | 0 |
| chainguard | langfuse-fips-4 | 0 |
| npm | next | 16.0.0 |
Timeline
- Oct 2, 2026 Coalition ESS Score
- Oct 2, 2026 CVE Published
- Oct 2, 2026 CVE Updated
- Oct 3, 2026 EPSS Score
- Oct 6, 2026 EPSS Score
- Oct 25, 2026 EPSS Score
- Oct 31, 2026 Security Advisory
References
- https://github.com/vercel/next.js/security/advisories/GHSA-39w2-rjm5-chcv x_refsource_CONFIRM
- https://github.com/vercel/next.js/commit/2d9f50a409312696145b82b3157aadb6b1fef476 x_refsource_MISC
- https://github.com/vercel/next.js/releases/tag/v16.3.8 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-94486 advisory
- https://github.com/advisories/GHSA-39w2-rjm5-chcv advisory