CVE-2021-47950

MEDIUM

Advanced Guestbook 2.4.4 Persistent XSS via Smilies

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47950. PoCs published by Abdulkadir AYDOGAN.

AI-analyzed exploit summary This exploit demonstrates a persistent XSS vulnerability in Advanced Guestbook 2.4.4 by injecting malicious JavaScript into the 's_emotion' parameter via a POST request to the admin panel. The payload executes when viewing the 'Smilies' tab after submission.

Description

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.

Exploits (1)

exploitdb WORKING POC
by Abdulkadir AYDOGAN · textwebappsphp
https://www.exploit-db.com/exploits/49875

This exploit demonstrates a persistent XSS vulnerability in Advanced Guestbook 2.4.4 by injecting malicious JavaScript into the 's_emotion' parameter via a POST request to the admin panel. The payload executes when viewing the 'Smilies' tab after submission.

Classification
Working Poc 95%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Advanced Guestbook 2.4.4
Auth required
Prerequisites: Admin credentials · Access to the admin panel
devstral-2 · analyzed May 10, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-49875
https://www.exploit-db.com/exploits/49875
Product product
Official Product Homepage
https://www.ampps.com/apps/guestbooks/Advanced_Guestbook
Third Party Advisory third-party-advisory
VulnCheck Advisory: Advanced Guestbook 2.4.4 Persistent XSS via Smilies
https://www.vulncheck.com/advisories/advanced-guestbook-persistent-xss-via-smilies

Scores

CVSS v3 6.4
EPSS 0.0019
EPSS Percentile 8.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
Ampps/Advanced Guestbook 2.4.4
Published May 10, 2026
Tracked Since May 10, 2026