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4.3

MCG Guestbook 1.0 lets attackers add malicious scripts

CVE-2010-4358 · published 15 years ago
Summary

The Guestbook 1.0 web component can be tricked into displaying attacker‑provided code in fields such as name, email, website or message. This could let a malicious user run scripts in visitors' browsers, potentially stealing data or altering page content. Update to a patched version or apply input‑validation fixes to stop the unwanted code.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
mrcgiguy guestbook 1.0
cpe:2.3:a:mrcgiguy:guestbook:1.0:*:*:*:*:*:*:*
Original advisory text
Multiple cross-site scripting (XSS) vulnerabilities in gb.cgi in MRCGIGUY (MCG) Guestbook 1.0 allow remote attackers to inject arbitrary web script or HTML via the (1) name, (2) email, (3) website,...
Multiple cross-site scripting (XSS) vulnerabilities in gb.cgi in MRCGIGUY (MCG) Guestbook 1.0 allow remote attackers to inject arbitrary web script or HTML via the (1) name, (2) email, (3) website, and (4) message parameters.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
4.3 Medium
Exploitation
1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published1 Dec 2010
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2010-4358 · NVD
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