---
cve: "CVE-2026-45109"
severity: "HIGH"
cvss: 7.5
epss: "57%"
vendor: "vercel"
kev: false
exploited: false
published: "2026-05-13 18:16:19"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T23:05:10+02:00"
---

# CVE-2026-45109

> 7.5 HIGH · 🧪 PoC

## Beschreibung

Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.18 and 16.2.6, it was found that the fix addressing CVE-2026-44575 did not apply to middleware.ts with Turbopack. This vulnerability is fixed in 15.5.18 and 16.2.6.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 9ff92cebcaa6ba4e7463b6fd037a8510ba9b81ec (Commit)
- ee6e79b1792a4d401ddf2480f40a83549fe8e722 (Commit)

## Referenzen

- <https://github.com/vercel/next.js/security/advisories/GHSA-26hh-7cqf-hhc6>
- <https://access.redhat.com/errata/RHSA-2026:34608>
- <https://access.redhat.com/errata/RHSA-2026:37272>
- <https://access.redhat.com/errata/RHSA-2026:40974>
- <https://access.redhat.com/errata/RHSA-2026:54435>
- <https://access.redhat.com/security/cve/CVE-2026-45109>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2477190>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45109.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-45109) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_