---
cve: "CVE-2026-56669"
severity: "HIGH"
cvss: 7.5
epss: "36%"
vendor: "elysiajs"
kev: false
exploited: false
published: "2026-07-08 20:25:18"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T10:56:32+02:00"
---

# CVE-2026-56669

> 7.5 HIGH · 🧪 PoC

## Beschreibung

Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation, and client-server communication. Prior to 1.4.29, Elysia uses getAll in form data normalization for multipart/form-data endpoints, causing the amount of work to grow quadratically with the number of unique key-value pairs and allowing CPU exhaustion. This issue is fixed in version 1.4.29.

## CVSS-Vektor

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

| 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 | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 8358ff9efbcedf9534995f5977f26b9ceab59329 (Commit)

## Referenzen

- <https://github.com/elysiajs/elysia/security/advisories/GHSA-9643-4qgh-g8mx>
- <https://github.com/elysiajs/elysia/commit/8358ff9efbcedf9534995f5977f26b9ceab59329>
- <https://gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9>
- <https://github.com/elysiajs/elysia/releases/tag/1.4.29>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-56669) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_