CVE-2003-1182: Cross-site scripting (XSS) vulnerability in MPM Guestbook 1.2 allows remote attackers to inject arbitrary web

This month

MEDIUM 6.8DOWNGRADE

CVE-2003-1182 is a medium-severity flaw (CVSS 6.8) affecting mpm 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 MPM Guestbook 1.2 allows remote attackers to inject arbitrary web script or HTML via the lng parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Published	2003-11-03
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mpm

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

Am I affected?

Timeline

2003-11-03 05:00 UTCPublished CVE record published
2026-06-16 22:03 UTCUpdated Record last modified

mpm mpm guestbook DOWNGRADE

Affected: 1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison mpm-guestbook sudo apt install mpm-guestbook=<VERSION_BEFORE_1.2> sudo apt-mark hold mpm-guestbook

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

dnf --showduplicates list mpm-guestbook sudo dnf downgrade mpm-guestbook-<VERSION_BEFORE_1.2> sudo dnf versionlock add mpm-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: MPM Guestbook 1.2 - 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-2003-1182?

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

Is CVE-2003-1182 being exploited?

CVE-2003-1182 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-2003-1182 affect?

CVE-2003-1182 affects mpm guestbook. Severity is medium (CVSS 6.8). Cross-site scripting (XSS) vulnerability in MPM Guestbook 1.2 allows remote attackers to inject arbitrary web script or HTML via the lng parameter.

How urgent is CVE-2003-1182?

Priority 49/100. Public exploit reference

References

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