---
cve: "CVE-2026-82657"
severity: "HIGH"
cvss: 8.7
epss: "18.8%"
vendor: "Admidio"
kev: false
exploited: false
published: "2026-08-30 15:16:46"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-08-31T16:39:17+02:00"
---

# CVE-2026-82657

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Admidio before 5.0.12 fails to enforce login-only module restrictions in RSS feed endpoints for forum and announcements modules. Unauthenticated attackers can retrieve forum topics and announcements by sending GET requests to rss/forum.php or rss/announcements.php, disclosing titles, full post text, author names, and timestamps.

## 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)

- 413bdaa219cb473f7db7f31c5f669955cba6795e (Commit)

## Referenzen

- <https://github.com/Admidio/admidio/security/advisories/GHSA-mg9h-42f8-2pmm>
- <https://www.vulncheck.com/advisories/admidio-before-5.0.12-authentication-bypass-via-rss-feeds>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-82657) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_