CVE-2006-3937: post.php in x_atrix xGuestBook 1.02 allows remote attackers to obtain sensitive information via a request with

Routine

MEDIUM 5.0DOWNGRADE

CVE-2006-3937 is a medium-severity flaw (CVSS 5.0) affecting xguestbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

post.php in x_atrix xGuestBook 1.02 allows remote attackers to obtain sensitive information via a request without the (1) user, (2) mail, (3) p, or (4) url parameter, which reveals the installation path in an error message.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	2006-07-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: xguestbook

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

Am I affected?

Timeline

2006-07-31 22:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

xguestbook xguestbook DOWNGRADE

Affected: 1.02

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.02

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.02 (Debian / Ubuntu)

apt-cache madison xguestbook sudo apt install xguestbook=<VERSION_BEFORE_1.02> sudo apt-mark hold xguestbook

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

dnf --showduplicates list xguestbook sudo dnf downgrade xguestbook-<VERSION_BEFORE_1.02> sudo dnf versionlock add xguestbook

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-2006-3937?

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

Is CVE-2006-3937 being exploited?

CVE-2006-3937 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-2006-3937 affect?

CVE-2006-3937 affects xguestbook. Severity is medium (CVSS 5.0). post.php in x_atrix xGuestBook 1.02 allows remote attackers to obtain sensitive information via a request without the (1) user, (2) mail, (3) p, or (4) url parameter, which reveals the installation path in an error message.

How urgent is CVE-2006-3937?

Priority 36/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2009-0810 HIGH 7.5 DOWNGRADE SQL injection vulnerability in login.php in xGuestbook 2.0 allows remote attackers to execute arbitrary SQL co

References

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