Exploit for nextjs-cve-2026-44578 CVE-2026-44578

SSRF in Next.js WebSocket Upgrade Handler exposing multi-cloud metadata endpoints.

Published 2 Sep 2026Updated 2 Sep 20263 sources
CVSS 8.6 PoC CANDIDATE

What happened

SSRF in Next.js WebSocket Upgrade Handler exposing multi-cloud metadata endpoints.

Affected versions

Unknown product: See original advisory Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

  • Review the original advisory and validate affected versions.
  • Apply vendor-provided updates or mitigations when available.

Public PoC references