How severe is CVE-2003-0979?

CVE-2003-0979 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2003-0979 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-0979?

CVE-2003-0979 affects Freescripts Visitorbook. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2003-0979?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2003-0979 published?

CVE-2003-0979 was published on 2004-01-05 and last updated on 2026-06-16.

CVE-2003-0979

CVE-2003-0979 is a medium-severity vulnerability in Freescripts Visitorbook with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Freescripts Visitorbook
Published: 2004-01-05
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2003-0979?: 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.
How severe is CVE-2003-0979?: CVE-2003-0979 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-0979 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0979?: CVE-2003-0979 affects Freescripts Visitorbook. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2003-0979?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-0979 published?: CVE-2003-0979 was published on 2004-01-05 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:freescripts:visitorbook:le:*:*:*:*:*:*:*

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CVE-2003-0980 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in FreeScripts VisitorBook LE (visitorbook.pl) allows remote attackers to…

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