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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.

PUBLISHED Reserved 2026-02-01 | Published 2026-05-10 | Updated 2026-05-10 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
MEDIUM: 6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem types

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

Product status

2.4.4
affected

Credits

Abdulkadir AYDOGAN finder

References

www.exploit-db.com/exploits/49875 (ExploitDB-49875) exploit

www.ampps.com/apps/guestbooks/Advanced_Guestbook (Official Product Homepage) product

www.vulncheck.com/...ed-guestbook-persistent-xss-via-smilies (VulnCheck Advisory: Advanced Guestbook 2.4.4 Persistent XSS via Smilies) third-party-advisory

cve.org (CVE-2021-47950)

nvd.nist.gov (CVE-2021-47950)

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