CVE-2021-47950

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 v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

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

Configurations

No configuration.

History

20 Jul 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Advanced Guestbook 2.4.4 contiene una persistente cross-site scripting vulnerabilidad en la interfaz de administración de emoticonos que permite a atacantes autenticados inyectar scripts maliciosos manipulando el parámetro s_emotion. Los atacantes pueden enviar solicitudes POST a admin.PHP con código JavaScript en el campo s_emotion, que se ejecuta cuando los administradores ven la pestaña de emoticonos.

10 May 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-10 13:16

Updated : 2026-07-20 20:10

NVD link : CVE-2021-47950

Mitre link : CVE-2021-47950

CVE.ORG link : CVE-2021-47950

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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