CVE-2006-3175: Multiple PHP remote file inclusion vulnerabilities in mcGuestbook 1.3 allow remote attackers to execute arbitr

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HIGH 7.5DOWNGRADE

CVE-2006-3175 is a high-severity flaw (CVSS 7.5) affecting mcguestbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple PHP remote file inclusion vulnerabilities in mcGuestbook 1.3 allow remote attackers to execute arbitrary PHP code via a URL in the lang parameter to (1) admin.php, (2) ecrire.php, and (3) lire.php. NOTE: it was later reported that the ecrire.php vector also affects 1.2. NOTE: this issue might be limited to a race condition during installation or an improper installation, since a completed installation creates an include file that preven

Why this priority

High severity
EPSS top 5%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	9.0% (top 5%)
CISA exploited list	No
Weakness	CWE-94
Published	2006-06-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mcguestbook

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

Am I affected?

Timeline

2006-06-23 00:02 UTCPublished CVE record published
2026-06-16 22:26 UTCUpdated Record last modified

mcguestbook mcguestbook DOWNGRADE

Affected: 1.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.3 (Debian / Ubuntu)

apt-cache madison mcguestbook sudo apt install mcguestbook=<VERSION_BEFORE_1.3> sudo apt-mark hold mcguestbook

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

dnf --showduplicates list mcguestbook sudo dnf downgrade mcguestbook-<VERSION_BEFORE_1.3> sudo dnf versionlock add mcguestbook

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: mcGuestbook 1.3 - 'admin.php?lang' Remote File Inclusion
Exploit-DB: mcGuestbook 1.3 - 'ecrire.php?lang' Remote File Inclusion
Exploit-DB: mcGuestbook 1.3 - 'lire.php?lang' Remote File Inclusion

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-2006-3175?

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

Is CVE-2006-3175 being exploited?

CVE-2006-3175 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-2006-3175 affect?

CVE-2006-3175 affects mcguestbook. Severity is high (CVSS 7.5). Multiple PHP remote file inclusion vulnerabilities in mcGuestbook 1.3 allow remote attackers to execute arbitrary PHP code via a URL in the lang parameter to (1) admin.php, (2) ecrire.php, and (3) lire.php. NOTE: it was later reported that

How urgent is CVE-2006-3175?

Priority 55/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

References

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