CVE-2006-4721: Directory traversal vulnerability in admin.php in CCleague Pro Sports CMS 1.0.1 RC1 allows remote attackers to

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MEDIUM 5.1DOWNGRADE

CVE-2006-4721 is a medium-severity flaw (CVSS 5.1) affecting pro sports cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in admin.php in CCleague Pro Sports CMS 1.0.1 RC1 allows remote attackers to read and execute arbitrary local files via a .. (dot dot) sequence and trailing null (%00) byte in the language Cookie parameter, as demonstrated by executing PHP code via a log file.

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	2.7% (top 14%)
CISA exploited list	No
Published	2006-09-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ccleague

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

Am I affected?

Timeline

2006-09-12 16:07 UTCPublished CVE record published
2026-06-16 22:29 UTCUpdated Record last modified

ccleague pro sports cms DOWNGRADE

Affected: 1.0.1_rc1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.1_rc1

1. Check installed version

apt-cache policy pro-sports-cms || rpm -q pro-sports-cms || pro-sports-cms --version

2. No fixed release: DOWNGRADE to a release before 1.0.1_rc1 (Debian / Ubuntu)

apt-cache madison pro-sports-cms sudo apt install pro-sports-cms=<VERSION_BEFORE_1.0.1_rc1> sudo apt-mark hold pro-sports-cms

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

dnf --showduplicates list pro-sports-cms sudo dnf downgrade pro-sports-cms-<VERSION_BEFORE_1.0.1_rc1> sudo dnf versionlock add pro-sports-cms

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: CCleague Pro 1.0.1RC1 - 'cookie' Remote Code Execution

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-2006-4721?

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

Is CVE-2006-4721 being exploited?

CVE-2006-4721 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-2006-4721 affect?

CVE-2006-4721 affects pro sports cms. Severity is medium (CVSS 5.1). Directory traversal vulnerability in admin.php in CCleague Pro Sports CMS 1.0.1 RC1 allows remote attackers to read and execute arbitrary local files via a .. (dot dot) sequence and trailing null (%00) byte in the language Cookie parameter,

How urgent is CVE-2006-4721?

Priority 44/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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