---
cve: "CVE-2026-27481"
severity: "MEDIUM"
cvss: 6.3
epss: "0.2%"
vendor: "discourse"
kev: false
exploited: false
published: "2026-04-03 22:16:25"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T02:38:11+02:00"
---

# CVE-2026-27481

> 6.3 MEDIUM · 🧪 PoC

## Beschreibung

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authorization bypass vulnerability allows unauthenticated or unauthorized users to view hidden (staff-only) tags and its associated data. All Discourse instances with tagging enabled and staff-only tag groups configured are impacted. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- b3f024ce9587e678216892cbd967201b2450e197 (Commit)
- 4431801e7b5af883edb430643fdace7608ffb6fb (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-6c9x-3vrp-682x>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-27481) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_