CVE-2007-2203: Cross-site scripting (XSS) vulnerability in Big Blue Guestbook allows remote attackers to inject arbitrary web

Routine

MEDIUM 4.3MITIGATE

CVE-2007-2203 is a medium-severity flaw (CVSS 4.3) affecting guestbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in Big Blue Guestbook allows remote attackers to inject arbitrary web script or HTML via the message field in the guestbook entry submission form.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Published	2007-04-24
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: big blue

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

Am I affected?

Timeline

2007-04-24 20:19 UTCPublished CVE record published
2026-06-16 22:39 UTCUpdated Record last modified

big blue guestbook MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

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

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2007-2203?

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

Is CVE-2007-2203 being exploited?

CVE-2007-2203 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-2007-2203 affect?

CVE-2007-2203 affects guestbook. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in Big Blue Guestbook allows remote attackers to inject arbitrary web script or HTML via the message field in the guestbook entry submission form.

How urgent is CVE-2007-2203?

Priority 31/100. No elevated risk signals yet.

Related CVEs

CVE-2015-0871 MEDIUM 4.3 UPGRADE Cross-site scripting (XSS) vulnerability in Mrs
CVE-2014-125053 MEDIUM 5.5 UPGRADE A vulnerability was found in Piwigo-Guest-Book up to 1.3.0
CVE-2010-4987 HIGH 7.5 MITIGATE SQL injection vulnerability in default.asp in KMSoft Guestbook (aka GBook) allows remote attackers to execute
CVE-2010-4358 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in gb.cgi in MRCGIGUY (MCG) Guestbook 1.0 allow remote att
CVE-2010-0978 MEDIUM 5.0 DOWNGRADE KMSoft Guestbook (aka GBook) 1.0 stores sensitive information under the web root with insufficient access cont

References

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