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CVE-2026-94486

5.4 · MEDIUM

Next.js is a React framework for building full-stack web applications.

Published Oct 2, 2026vercelCWE-346EPSS 0.11%

Overview

CVE-2026-94486 is a medium-severity vulnerability affecting vercel next.js. It was published on October 2, 2026 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from vercel. Update next.js to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
vercelnext.js>= 16.0.0, < 16.3.8Affected

References

GitHubgithub.com/vercel/next.js/commit/2d9f50a409312696145b82b3157aadb6b1fef476GitHubgithub.com/vercel/next.js/releases/tag/v16.3.8GitHubgithub.com/vercel/next.js/security/advisories/GHSA-39w2-rjm5-chcv

How CyberStrike helps

Frequently asked questions

What is CVE-2026-94486?

CVE-2026-94486 is a medium-severity vulnerability affecting vercel next.js. It was published on October 2, 2026 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-94486?

This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-94486?

Check the references section for vendor advisories and patches from vercel. Update next.js to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-94486?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-94486 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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