CVE-2003-1136: Cross-site scripting (XSS) vulnerability in Chi Kien Uong Guestbook 1.51 allows remote attackers to inject arb

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MEDIUM 4.3DOWNGRADE

CVE-2003-1136 is a medium-severity flaw (CVSS 4.3) affecting chi kien uong 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 Chi Kien Uong Guestbook 1.51 allows remote attackers to inject arbitrary web script or HTML via (1) HTML in a posted message or (2) Javascript in an onmouseover attribute in an e-mail address or URL.

Why this priority

EPSS top 8%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	5.0% (top 8%)
CISA exploited list	No
Published	2003-10-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: chi kien uong

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

Am I affected?

Timeline

2003-10-23 04:00 UTCPublished CVE record published
2026-06-16 22:03 UTCUpdated Record last modified

chi kien uong chi kien uong guestbook DOWNGRADE

Affected: 1.51

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.51

1. Check installed version

apt-cache policy chi-kien-uong-guestbook || rpm -q chi-kien-uong-guestbook || chi-kien-uong-guestbook --version

2. No fixed release: DOWNGRADE to a release before 1.51 (Debian / Ubuntu)

apt-cache madison chi-kien-uong-guestbook sudo apt install chi-kien-uong-guestbook=<VERSION_BEFORE_1.51> sudo apt-mark hold chi-kien-uong-guestbook

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

dnf --showduplicates list chi-kien-uong-guestbook sudo dnf downgrade chi-kien-uong-guestbook-<VERSION_BEFORE_1.51> sudo dnf versionlock add chi-kien-uong-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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Chi Kien Uong Guestbook 1.51 - Cross-Site Scripting

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-2003-1136?

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

Is CVE-2003-1136 being exploited?

CVE-2003-1136 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-2003-1136 affect?

CVE-2003-1136 affects chi kien uong guestbook. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in Chi Kien Uong Guestbook 1.51 allows remote attackers to inject arbitrary web script or HTML via (1) HTML in a posted message or (2) Javascript in an onmouseover attribute in an e-mail address or U

How urgent is CVE-2003-1136?

Priority 43/100. EPSS top 8%: very likely to be exploited; Public exploit reference

References

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