---
cve: "CVE-2020-5280"
severity: "HIGH"
cvss: 7.6
epss: "7%"
vendor: "http4s"
kev: false
exploited: false
published: "2020-03-25 17:45:17"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T17:07:35+02:00"
---

# CVE-2020-5280

> 7.6 HIGH · 🧪 PoC

## Beschreibung

http4s before versions 0.18.26, 0.20.20, and 0.21.2 has a local file inclusion vulnerability. This vulnerability applies to all users of org.http4s.server.staticcontent.FileService, org.http4s.server.staticcontent.ResourceService and org.http4s.server.staticcontent.WebjarService. URI normalization is applied incorrectly. Requests whose path info contain ../ or // can expose resources outside of the configured location. This issue is patched in versions 0.18.26, 0.20.20, and 0.21.2. Note that 0.19.0 is a deprecated release and has never been supported.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 18b23dea4d2d033540dd100103a8d4cf05ae5171 (Commit)
- 4e23069016098b8e36e8f9e0fa42d9b0166bf3b0 (Commit)

## Referenzen

- <https://github.com/http4s/http4s/security/advisories/GHSA-66q9-f7ff-mmx6>
- <https://github.com/http4s/http4s/commit/250afddbb2e65b70ca9ddaec9d1eb3aaa56de7ec>
- <https://github.com/http4s/http4s/commit/752b3f63a05a31d2de4f8706877aa08d6b89efca>
- <https://github.com/http4s/http4s/commit/b87f31b2292dabe667bec3b04ce66176c8a3e17b>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-5280) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_