VIR Vulnerability Intelligence Relay

CVE-2026-45109

high
Published 2026-05-13 · Modified 2026-05-14
CVSS v3
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v2
—
VIR risk
7.5

Description

Next.js has a Middleware / Proxy bypass in App Router applications via segment-prefetch routes - Incomplete Fix Follow-Up

Predictions

Exploit likelihood
83%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: security-advisories@github.com — https://github.com/vercel/next.js/security/advisories/GHSA-26hh-7cqf-hhc6

Package impact
EcosystemPackageVulnerableFixed
npm npmnext>=15.2.0,<15.5.1815.5.18
npm npmnext>=16.0.0,<16.2.616.2.6
npm NPMnext>= 16.0.0, < 16.2.616.2.6
npm NPMnext>= 15.2.0, < 15.5.1815.5.18

Application impact
VendorProductVersionsFixed
vercelnext.js{"startIncluding":"15.2.0","endExcluding":"15.5.18"}15.5.18

References

CWEs

CWE-288

Verify integrity in audit chain (admin only). AS-IS.