CVE-2006-2921: PHP remote file inclusion vulnerability in cmpro_header.inc.php in Clan Manager Pro (CMPRO) 1.1 and earlier, w

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MEDIUM 5.1DOWNGRADE

CVE-2006-2921 is a medium-severity flaw (CVSS 5.1) affecting clan manager pro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in cmpro_header.inc.php in Clan Manager Pro (CMPRO) 1.1 and earlier, when register_globals is enabled, allows remote attackers to execute arbitrary PHP code via a URL in the (1) cm_ext_server and (2) sitepath parameters.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.1 (Medium)
EPSS exploit chance	1.6% (top 25%)
CISA exploited list	No
Published	2006-06-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cmpro team

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

Am I affected?

Timeline

2006-06-09 10:02 UTCPublished CVE record published
2026-06-16 22:26 UTCUpdated Record last modified

cmpro team clan manager pro DOWNGRADE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

apt-cache policy clan-manager-pro || rpm -q clan-manager-pro || clan-manager-pro --version

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison clan-manager-pro sudo apt install clan-manager-pro=<VERSION_BEFORE_1.1> sudo apt-mark hold clan-manager-pro

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

dnf --showduplicates list clan-manager-pro sudo dnf downgrade clan-manager-pro-<VERSION_BEFORE_1.1> sudo dnf versionlock add clan-manager-pro

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-2006-2921?

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

Is CVE-2006-2921 being exploited?

CVE-2006-2921 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-2006-2921 affect?

CVE-2006-2921 affects clan manager pro. Severity is medium (CVSS 5.1). PHP remote file inclusion vulnerability in cmpro_header.inc.php in Clan Manager Pro (CMPRO) 1.1 and earlier, when register_globals is enabled, allows remote attackers to execute arbitrary PHP code via a URL in the (1) cm_ext_server and (2)

How urgent is CVE-2006-2921?

Priority 42/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-7046 HIGH 9.3 DOWNGRADE PHP remote file inclusion vulnerability in cmpro.intern/login.inc.php for Clan Manager Pro (CMPRO) 1.1.0 allow
CVE-2006-7045 HIGH 7.5 UPGRADE PHP remote file inclusion vulnerability in Clan Manager Pro (CMPRO) 1.1.0 and earlier allows remote attackers
CVE-2006-7044 HIGH 7.5 UPGRADE PHP remote file inclusion vulnerability in comment.core.inc.php in Clan Manager Pro (CMPRO) 1.11 and earlier a

References

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