---
cve: "CVE-2025-68475"
severity: "HIGH"
cvss: 7.5
epss: "55%"
vendor: "fedify-dev"
kev: false
exploited: false
published: "2025-12-22 21:31:20"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T10:55:55+02:00"
---

# CVE-2025-68475

> 7.5 HIGH · 🧪 PoC

## Beschreibung

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to versions 1.6.13, 1.7.14, 1.8.15, and 1.9.2, a Regular Expression Denial of Service (ReDoS) vulnerability exists in Fedify's document loader. The HTML parsing regex at packages/fedify/src/runtime/docloader.ts:259 contains nested quantifiers that cause catastrophic backtracking when processing maliciously crafted HTML responses. This issue has been patched in versions 1.6.13, 1.7.14, 1.8.15, and 1.9.2.

## 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)

- 6658a9cab3731449c0d71289d88d189c5161be9c (Commit)
- c6d7e743c995c9fa84d74f94952eb0dfc6cb7bab (Commit)

## Referenzen

- <https://github.com/fedify-dev/fedify/security/advisories/GHSA-rchf-xwx2-hm93>
- <https://github.com/fedify-dev/fedify/commit/2bdcb24d7d6d5886e0214ed504b63a6dc5488779>
- <https://github.com/fedify-dev/fedify/commit/bf2f0783634efed2663d1b187dc55461ee1f987a>
- <https://github.com/fedify-dev/fedify/releases/tag/1.6.13>
- <https://github.com/fedify-dev/fedify/releases/tag/1.7.14>
- <https://github.com/fedify-dev/fedify/releases/tag/1.8.15>
- <https://github.com/fedify-dev/fedify/releases/tag/1.9.2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-68475) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_