---
cve: "CVE-2026-27934"
severity: "HIGH"
cvss: 8.7
epss: "25%"
vendor: "discourse"
kev: false
exploited: false
published: "2026-03-19 22:16:30"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T06:52:00+02:00"
---

# CVE-2026-27934

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a lack of visibility checks with a user action API endpoint that results in disclosure of the title and post excerpt to unauthorized users, leading to information disclosure. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/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)

- 808b2ac23d8ff421563b40203091026732471c60 (Commit)
- f38464e46df1b8c51f7d60826502476908d6bb2b (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-824f-66wh-xx3g>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-27934) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_