---
cve: "CVE-2026-46413"
severity: "MEDIUM"
cvss: 6.5
epss: "37%"
vendor: "discourse"
kev: false
exploited: false
published: "2026-07-09 22:17:05"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T15:21:11+02:00"
---

# CVE-2026-46413

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, regular users could route direct S3 multipart uploads through ExternalUploadManager into the admin backup store. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- c06899647d758493d95a5b301e573ffa3db1e878 (Commit)
- 4bbdddfc6700ca23604242111d4fa0e00347af97 (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-3mvf-q9rg-w6m7>
- <https://github.com/discourse/discourse/commit/1f1ded8dd361d81786bff17b35e1138d6ee299c0>
- <https://github.com/discourse/discourse/commit/7ddde266617b452152c1bf5f903f6c07be38fc40>
- <https://github.com/discourse/discourse/commit/a53df26dcf7e50ce2b20bfd5454a0c9d44b8fc7d>
- <https://github.com/discourse/discourse/commit/abaa664c5df84026efb2ca264ba0f5586c3f2b01>
- <https://github.com/discourse/discourse/releases/tag/v2026.1.5>
- <https://github.com/discourse/discourse/releases/tag/v2026.4.2>
- <https://github.com/discourse/discourse/releases/tag/v2026.5.1>
- <https://github.com/discourse/discourse/releases/tag/v2026.6.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-46413) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_