CVE-2006-2005: Eval injection vulnerability in index.php in ClanSys 1.1 allows remote attackers to execute arbitrary PHP code

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HIGH 7.5DOWNGRADE

CVE-2006-2005 is a high-severity flaw (CVSS 7.5) affecting clansys. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Eval injection vulnerability in index.php in ClanSys 1.1 allows remote attackers to execute arbitrary PHP code via PHP code in the page parameter, as demonstrated by using an "include" statement that is injected into the eval statement. NOTE: this issue has been described as file inclusion by some sources, but that is just one attack; the primary vulnerability is eval injection.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.3% (top 11%)
CISA exploited list	No
Published	2006-04-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: clansys

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

Am I affected?

Timeline

2006-04-25 12:50 UTCPublished CVE record published
2026-06-16 22:24 UTCUpdated Record last modified

clansys clansys 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 clansys || rpm -q clansys || clansys --version

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

apt-cache madison clansys sudo apt install clansys=<VERSION_BEFORE_1.1> sudo apt-mark hold clansys

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

dnf --showduplicates list clansys sudo dnf downgrade clansys-<VERSION_BEFORE_1.1> sudo dnf versionlock add clansys

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: Clansys 1.1 - 'index.php' PHP Code Insertion

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-2006-2005?

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

Is CVE-2006-2005 being exploited?

CVE-2006-2005 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-2006-2005 affect?

CVE-2006-2005 affects clansys. Severity is high (CVSS 7.5). Eval injection vulnerability in index.php in ClanSys 1.1 allows remote attackers to execute arbitrary PHP code via PHP code in the page parameter, as demonstrated by using an "include" statement that is injected into the eval statement. NO

How urgent is CVE-2006-2005?

Priority 53/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-2368 MEDIUM 5.8 DOWNGRADE Cross-site scripting (XSS) vulnerability in index.php in Clansys (aka Clanpage System) 1.1 allows remote attac
CVE-2006-2367 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in index.php in Clansys (aka Clanpage System) 1.0 and 1.1 allows remo
CVE-2006-1708 HIGH 7.5 DOWNGRADE SQL injection vulnerability in member.php in Clansys 1.1 allows remote attackers to execute arbitrary SQL comm

References

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