---
cve: "CVE-2021-47950"
severity: "MEDIUM"
cvss: 5.1
epss: "0.2%"
vendor: "Ampps"
kev: false
exploited: false
published: "2026-05-10 13:16:31"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-23T10:20:13+02:00"
---

# CVE-2021-47950

> 5.1 MEDIUM · 🧪 PoC

## Beschreibung

Advanced Guestbook 2.4.4 contains a persistent cross-site scripting vulnerability in the smilies administration interface that allows authenticated attackers to inject malicious scripts by manipulating the s_emotion parameter. Attackers can submit POST requests to admin.php with JavaScript code in the s_emotion field, which executes when administrators view the smilies tab.

## CVSS-Vektor

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

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

## Referenzen

- <https://www.exploit-db.com/exploits/49875>
- <https://www.ampps.com/apps/guestbooks/Advanced_Guestbook>
- <https://www.vulncheck.com/advisories/advanced-guestbook-persistent-xss-via-smilies>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-47950) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_