CVE-2006-4451: Direct static code injection vulnerability in CJ Tag Board 3.0 allows remote attackers to execute arbitrary PH

This month

HIGH 7.5DOWNGRADE

CVE-2006-4451 is a high-severity flaw (CVSS 7.5) affecting cj tag board. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Direct static code injection vulnerability in CJ Tag Board 3.0 allows remote attackers to execute arbitrary PHP code via the (1) User-Agent HTTP header in tag.php, which is executed by all.php, and (2) the banned parameter in admin_index.php.

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	1.6% (top 25%)
CISA exploited list	No
Published	2006-08-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cj design

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

Am I affected?

Timeline

2006-08-30 01:04 UTCPublished CVE record published
2026-06-16 22:29 UTCUpdated Record last modified

cj design cj tag board DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

apt-cache policy cj-tag-board || rpm -q cj-tag-board || cj-tag-board --version

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison cj-tag-board sudo apt install cj-tag-board=<VERSION_BEFORE_3.0> sudo apt-mark hold cj-tag-board

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

dnf --showduplicates list cj-tag-board sudo dnf downgrade cj-tag-board-<VERSION_BEFORE_3.0> sudo dnf versionlock add cj-tag-board

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-2006-4451?

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

Is CVE-2006-4451 being exploited?

CVE-2006-4451 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-2006-4451 affect?

CVE-2006-4451 affects cj tag board. Severity is high (CVSS 7.5). Direct static code injection vulnerability in CJ Tag Board 3.0 allows remote attackers to execute arbitrary PHP code via the (1) User-Agent HTTP header in tag.php, which is executed by all.php, and (2) the banned parameter in admin_index.ph

How urgent is CVE-2006-4451?

Priority 45/100. High severity

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-4797 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in tag.php in CloudNine Interactive CJ Tag Board 3.0 allows remote at
CVE-2005-2899 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in details.php in CjTagBoard 3.0 allow remote attackers to

References

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