---
cve: "CVE-2026-77806"
severity: "CRITICAL"
cvss: 9.8
epss: "4.2%"
vendor: "SPIP"
kev: false
exploited: false
published: "2026-08-21 14:16:53"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T03:03:31+02:00"
---

# CVE-2026-77806

> 9.8 CRITICAL · 🧪 PoC

## Beschreibung

SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to code injection via an X-Spip-Filtre HTTP request header that is mishandled by analyse_resultat_skel.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://github.com/rapid7/metasploit-framework/pull/21790>
- <https://github.com/rapid7/metasploit-framework/pull/21790#issuecomment-5368038123>
- <https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-21.html>
- <https://github.com/rapid7/metasploit-framework/pull/21790/commits/b16eca819abb8f1401f21d115e71e3dfc67b847c>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-77806) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_