CVE-2021-47950
Advanced Guestbook 2.4.4 Persistent XSS via Smilies
- State
- Published
- Severity
- 5.1 Medium
- Published
- May 10, 2026
- Updated
- Jul 15, 2026
- Reserved
- Feb 1, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | 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 | VulnCheck |
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Advanced GuestbookAmpps |
|
References
- ExploitDB-49875exploit
- Official Product Homepageproduct
- VulnCheck Advisory: Advanced Guestbook 2.4.4 Persistent XSS via Smiliesthird-party-advisory
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