---
cve: "CVE-2026-27162"
severity: "MEDIUM"
cvss: 4.9
epss: "23%"
vendor: "discourse"
kev: false
exploited: false
published: "2026-02-26 21:28:54"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T01:54:09+02:00"
---

# CVE-2026-27162

> 4.9 MEDIUM · 🧪 PoC

## Beschreibung

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, `posts_nearby` was checking topic access but then returning all posts regardless of type, including whispers that should only be visible to whisperers. Use `Post.secured(guardian)` to properly filter post types based on user permissions. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 9c924c6f4f3885ab616e21bec2447af7056b4322 (Commit)
- 8a2a8b7d3a494435949a12ad078b22509f54bd58 (Commit)

## Referenzen

- <https://github.com/discourse/discourse/security/advisories/GHSA-gffm-43j4-372w>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-27162) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_