---
cve: "CVE-2026-30837"
severity: "HIGH"
cvss: 7.5
epss: "49%"
vendor: "elysiajs"
kev: false
exploited: false
published: "2026-03-10 21:16:47"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T10:56:01+02:00"
---

# CVE-2026-30837

> 7.5 HIGH · 🧪 PoC

## Beschreibung

Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation and client-server communication. Prior to 1.4.26 , t.String({ format: 'url' }) is vulnerable to ReDoS. Repeating a partial url format (protocol and hostname) multiple times cause regex to slow down significantly. This vulnerability is fixed in 1.4.26.

## 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)

- bbaf6b7f729b858a7435bf28b97119112177479e (Commit)

## Referenzen

- <https://github.com/elysiajs/elysia/security/advisories/GHSA-f45g-68q3-5w8x>
- <https://github.com/EdamAme-x/elysia-poc-redos>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-30837) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_