Track vulnerabilities like this one. Sign up free to get alerted when software you use is affected.
5.0

FreeScripts VisitorBook LE can relay mail or erase entries

CVE-2003-0979 · published 22 years ago
Summary

The VisitorBook LE guestbook script can be tricked into sending unauthorized email or wiping its own database when it receives specially crafted input with extra line breaks. This could let spammers use your system to send mail and cause loss of stored visitor records. Update the script to a patched version or apply input‑validation fixes, and disable the mail feature if not needed.

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
freescripts visitorbook le
cpe:2.3:a:freescripts:visitorbook:le:*:*:*:*:*:*:*
Original advisory text
FreeScripts VisitorBook LE (visitorbook.pl) does not properly escape line breaks in input, which allows remote attackers to (1) use VisitorBook as an open mail relay, when $mailuser is 1, via extra...
FreeScripts VisitorBook LE (visitorbook.pl) does not properly escape line breaks in input, which allows remote attackers to (1) use VisitorBook as an open mail relay, when $mailuser is 1, via extra headers in the email field, or (2) cause the guestbook database to be deleted via a large number of line breaks that exceeds the $max_posts variable.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.0 Medium
Exploitation
1% chance of attack within 30 days
Timeline
Published5 Jan 2004
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2003-0979 · NVD
Track software like this
Free during beta