CVE-2006-0500: MyCO Guestbook 1.0 stores the admin directory under the web document root with insufficient access control, wh

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HIGH 7.5DOWNGRADE

CVE-2006-0500 is a high-severity flaw (CVSS 7.5) affecting myco guestbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MyCO Guestbook 1.0 stores the admin directory under the web document root with insufficient access control, which allows remote attackers to perform unspecified privileged actions by directly accessing files via a URL.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Published	2006-02-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: punctweb

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

Am I affected?

Timeline

2006-02-01 22:02 UTCPublished CVE record published
2026-06-16 22:20 UTCUpdated Record last modified

punctweb myco guestbook DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison myco-guestbook sudo apt install myco-guestbook=<VERSION_BEFORE_1.0> sudo apt-mark hold myco-guestbook

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

dnf --showduplicates list myco-guestbook sudo dnf downgrade myco-guestbook-<VERSION_BEFORE_1.0> sudo dnf versionlock add myco-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.

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-2006-0500?

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

Is CVE-2006-0500 being exploited?

CVE-2006-0500 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-2006-0500 affect?

CVE-2006-0500 affects myco guestbook. Severity is high (CVSS 7.5). MyCO Guestbook 1.0 stores the admin directory under the web document root with insufficient access control, which allows remote attackers to perform unspecified privileged actions by directly accessing files via a URL.

How urgent is CVE-2006-0500?

Priority 44/100. High severity

Related CVEs

CVE-2006-0501 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in MyCO Guestbook 1.0 allows remote attackers to inject arbitrary web

References

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