CVE-2006-0540: Multiple SQL injection vulnerabilities in Tachyon Vanilla Guestbook 1.0 beta allow remote attackers to execute

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HIGH 7.5DOWNGRADE

CVE-2006-0540 is a high-severity flaw (CVSS 7.5) affecting vanilla guestbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple SQL injection vulnerabilities in Tachyon Vanilla Guestbook 1.0 beta allow remote attackers to execute arbitrary SQL commands via unspecified vectors.

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	1.2% (top 31%)
CISA exploited list	No
Published	2006-02-04
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: tachyon

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

Am I affected?

Timeline

2006-02-04 02:02 UTCPublished CVE record published
2026-06-16 22:20 UTCUpdated Record last modified

tachyon vanilla guestbook DOWNGRADE

Affected: 1.0_beta

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0_beta

1. Check installed version

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

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

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

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

dnf --showduplicates list vanilla-guestbook sudo dnf downgrade vanilla-guestbook-<VERSION_BEFORE_1.0_beta> sudo dnf versionlock add vanilla-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-2006-0540?

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

Is CVE-2006-0540 being exploited?

CVE-2006-0540 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-2006-0540 affect?

CVE-2006-0540 affects vanilla guestbook. Severity is high (CVSS 7.5). Multiple SQL injection vulnerabilities in Tachyon Vanilla Guestbook 1.0 beta allow remote attackers to execute arbitrary SQL commands via unspecified vectors.

How urgent is CVE-2006-0540?

Priority 44/100. High severity

Related CVEs

CVE-2006-0541 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in Tachyon Vanilla Guestbook 1.0 beta allow remote attacke

References

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