CVE-2026-45109
1 advisory.
npm/next CVE-2026-45109: high 7.5
Next.js has a Middleware / Proxy bypass in App Router applications via segment-prefetch routes - Incomplete Fix Follow-Up
Action: Upgrade next to 15.5.18 or later.
npm i next@15.5.18npm i next@16.2.6Affected
| introduced | fixed | last affected |
|---|---|---|
| 15.2.0 | 15.5.18 | - |
| 16.0.0 | 16.2.6 | - |
Fixed versions
| 15.5.18 | 16.2.6 |
Sources
- osv: GHSA-26hh-7cqf-hhc6
- https://github.com/vercel/next.js/security/advisories/GHSA-267c-6grr-h53f
- https://github.com/vercel/next.js/security/advisories/GHSA-26hh-7cqf-hhc6
- https://nvd.nist.gov/vuln/detail/CVE-2026-45109
- https://github.com/vercel/next.js
- https://github.com/vercel/next.js/releases/tag/v15.5.18
- https://github.com/vercel/next.js/releases/tag/v16.2.6
CVE-2026-45109 · published · modified · JSON