p PatchFirst

CVE-2026-64645

CVE-2026-64645 · Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a rewrites() or redirects() rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the rule's hostname suffix. For a rewrite, Next.js proxies the request to that arbitrary host and serves the response from the application's origin, leading to Server-Side Request forgery. A redirects() rule configured this way is vulnerable to an Open Redirect. This issue has been fixed in versions 15.5.21 and 16.2.11.

CVSS 8.3 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • next.js

    Versions
    • >= 12.0.0 < 15.5.21: Affected
    • >= 16.0.0, < 16.2.11: Affected

    No fix published

  • next npm

    Affected ranges
    • SEMVER: ≥ 12.0.0, < 15.5.21

    Update to 15.5.21

  • next npm

    Affected ranges
    • SEMVER: ≥ 16.0.0, < 16.2.11

    Update to 16.2.11

Original sources

Check your server →