---
cve: "CVE-2026-91133"
severity: "MEDIUM"
cvss: 6.5
epss: "0.3%"
vendor: "discourse"
kev: false
exploited: false
published: "2026-09-24 17:17:08"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-01T10:54:03+02:00"
---

# CVE-2026-91133

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, authenticated users could supply unescaped SQL LIKE metacharacters to upload-resolution patterns, causing wildcard input to select unrelated upload records instead of matching a literal identifier. The affected upload metadata, URL-lookup, and cooked-video-placeholder paths could resolve uploads the user was not authorized to access. This allowed disclosure of restricted metadata, including original filenames and secure-upload paths, without modifying the upload records. This issue is fixed in versions 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- fb9247e04a826ab8e4d91168b3c4c839ec40bccc (Commit)
- 3ab62a8397926ed934b667a5db06284c45b4c774 (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-8hxh-573g-52gx>
- <https://github.com/discourse/discourse/pull/42882>
- <https://github.com/discourse/discourse/commit/113c34d433d564bc69642649d501251a7e820b52>
- <https://github.com/discourse/discourse/commit/20c48bef712ee3edd4f7af58ca1123cb0c16ef6f>
- <https://github.com/discourse/discourse/commit/a04cab107a9f57939456181c4b082d0a34ec39bd>
- <https://github.com/discourse/discourse/commit/cb3ca8420fcc7aba334effd011cf41943a336fa6>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-91133) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_