CVE-2002-0551: Cross-site scripting vulnerability in Dynamic Guestbook 3.0 allows remote attackers to execute code in clients

This month

HIGH 7.5DOWNGRADE

CVE-2002-0551 is a high-severity flaw (CVSS 7.5) affecting dynamic guestbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting vulnerability in Dynamic Guestbook 3.0 allows remote attackers to execute code in clients who access guestbook pages via the parameters (1) name, (2) mail, or (3) kommentar.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.6% (top 11%)
CISA exploited list	No
Published	2002-07-03
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: gcf

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2002-07-03 04:00 UTCPublished CVE record published
2026-06-16 21:57 UTCUpdated Record last modified

gcf dynamic guestbook DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

apt-cache policy dynamic-guestbook || rpm -q dynamic-guestbook || dynamic-guestbook --version

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison dynamic-guestbook sudo apt install dynamic-guestbook=<VERSION_BEFORE_3.0> sudo apt-mark hold dynamic-guestbook

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list dynamic-guestbook sudo dnf downgrade dynamic-guestbook-<VERSION_BEFORE_3.0> sudo dnf versionlock add dynamic-guestbook

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2002-0551?

dynamic guestbook: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-0551 being exploited?

CVE-2002-0551 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2002-0551 affect?

CVE-2002-0551 affects dynamic guestbook. Severity is high (CVSS 7.5). Cross-site scripting vulnerability in Dynamic Guestbook 3.0 allows remote attackers to execute code in clients who access guestbook pages via the parameters (1) name, (2) mail, or (3) kommentar.

How urgent is CVE-2002-0551?

Priority 49/100. High severity

Related CVEs

CVE-2002-0550 HIGH 7.5 DOWNGRADE Dynamic Guestbook 3.0 allows remote attackers to execute arbitrary code via shell metacharacters in the gbdate

References

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